Top Circuits Page 89
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This Instructible is entered in the Category: 13 - 18 of the National Robotics Week Robot Contest...
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What do you do with an old phone, a microcontroller and lots of time? You hook the old phone`s LCD screen to the computer USB of course...
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This project gives you a real time clock with the RTC chip DS1307. This RTC chip has inbuilt oscillator for clock and it has its own registers for full...
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Attach any I2C client chip (thermo sensors, AD converter, displays, relais driver, to your PC via USB quick, easy and cheap! Drivers for Linux, Windows...
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DESCRIPTION This project is to make a clone of Arduino Leonardo in a simple way.That is why the distribution of the pin does not match the standard Arduino...
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Lux meter circuit atmel attiny26-16 microcontroller based on the value of the LED displays on the display lux with LEDs placed on 2sk1061 MOS...
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PCM Powercom was founded in 1987, a leading provider of power protection products with ISO 9001 certificate. There are over 2,600 employees around the world...
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The ATMEL AVR programmer works with the Windows program ""Ponyprog"" which works under 95, 98, XP...
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PowerMan UPS/Inverters Uninterruptible power supplies and voltage regulators Business founded in 1993. Prior to 2000. company engaged in distribution...
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Timers are widely used in industrial and domestic application for automating tasks. Microcontrollers can be used to design versatile and accurate timers with...
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This project gives you a nice and simple scientific calculator using AVR microcontroller. It has 2 keypads as shown in the circuit diagram and the results are...
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This simple circuit allows you to use your oscilloscope as a Time Domain Reflectometer (TDR). This is how it works. Send a pulse down a cable and watch for the...
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For the last year I`ve been working on a prototype for a Solar Inverter that can be Grid Intertied. A solar inverter takes the 12V DC (or other voltages) from...
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This project gives you a simple temperature controlled fan. If the difference between real temperature and the user temperature is high then the fan will run at...
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I am presenting one application with the Nokia 3310 LCD: Designing a thermometer using DS1621 temperature sensor IC. DS1621 is 8-pin sensor from Maxim, with...
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UPS Schematic Circuit Diagram for 3000 Watts UPS It can also work for 1000 VA with minor modifications...
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There are numerous posts on Instructables about how to make a flickering LED candle. This is my version. The project requires the following components...
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A single IC provides all amplifiers: 74HC04 Hex Inverter ( a digital element). The 2nd oscillator synchronizes to 3 times the 1st oscillator and thereforethe FM deviation is tripled. Using the lower freq f1 oscillator also enhancesfrequency stability. ..
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Mods for JCM900-4100 Note: there are many versions of the schematic for this amp, proceed with caution!! VERIFY which version of the board you have by matching part numbers with the schematics posted...
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This random timer circuit is based on a Atmel ATTINY24 avr driving one power relay. You can use this circuit to switch on and off other circuits randomly. For example, when using this circuit on a model railroad you can turn on and off parts of the animated....
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There are basically two systems of pneumatic central locking on Audis of the vintage that I deal with - the earlier cars are controlled by the drivers door lock, and the later ones by both front door locks. The early ones (5000/100/200 before 1984,....
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When SW1, SW2 or SW3 are open the input sensitivity is suited to high-output devices like CD players, tuners, tape recorders, iPods, miniDisc players, computer audio outputs etc. Sometimes, the 750 Ohm value for R3, R13 and R17 resistors could be not easy to....
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This is the 8W audio amplifier with IC LM383 as the main component. Very simple, easy and cheap circuit...
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Set R5 to read 1V RMS on an Audio Millivoltmeter connected to the output with R7 rotated fully clockwise, or to view a sinewave of 2. 828V Peak-to-Peak amplitude on the oscilloscope. An audio amplifier is an electronic amplifier that amplifies low-power....
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As numerous or as few channels as are needed may be added to the mixer. Do this by just duplicating the input "sections" that are shown on the schematic design. An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals....
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The following is the diagram of 5W audio amplifier circuit which built using power transistor BD139 and BD140 as the final gaining process. This small amplifier can be used as general purpose amplifier such as computer amplifier, radio, mp3 player, video....
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This is a stereo amplifier circuit diagram. The amplifier will produce stereo output channel with the power audio output can reach up to 70W for each channel. The amplifier built based great amplifier chip STA550 from STMicroelectronics. Take a note that....
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This is the schematic diagram of very simple headphone amplifier circuit. The circuit built using two NPN transistors. You can use transistor BC549C or other NPN transistors such as European equivalent: BC548C, BC547C, BC239, 2N5818 or 2N2222 An audio....
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An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a....
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The following diagram is the circuit of Stereo OTL Audio Amplifier. It based on IC circuit, so the circuit looks simple. You can use IC LM379, LM377, LM378 for this amplifier project. Refer to the table, maximum voltage supply for IC LM379 is 28V, it will....
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Here is simple LED-power audio amplifier ambit with MOSFET amplifier TL071C and 2 may be up to 45 W into 8 ohms. For MOSFET IRFP240 and IRFP9240 are acclimated assurance with accessory can now be these modification. The arrangement is at the appeal SILICONIX....
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This is a stereo circuit schematic of the ADAU1592, a 2-channel, bridge-tied amount (BTL) switching audio ability amplifier. You can administer ADAU1592 on collapsed console televisions, pc audio arrangement and/or mini-components applications. According to....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The 1K resistors in the circuit are capital so that the LED`s about-face on at altered audio levels. There is no acumen why....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This mixer shows you how to accomplish microphone pre-amps for low and hi impedance mics. Use the everyman babble op-amp you....
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The antenna amplifier circuit has a part count of about 40, using the following active parts: 2 NPN transistors (BC548`s), 1 MOSFET (BF981), 2 Varicap diodes (KV1235), as well as a 6v2 zener-diode. there is and a 330uH (micro Henry) inductor / coil, which....
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High frequency waveform generator is very useful in electronic experiment and design. This circuit generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. The frequency can be controlled using....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. a 32. 768 KHz square wave from a common watch crystal. The output can be fed to a 15 stage binary counter to obtain a 1 second....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is the circuit quality preamplifier with built-in USB DAC for my Leachamp power amplifier. Scheme is PCM2902 datasheet.....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. A simple DC motor controller circuit with NE555 is shown here. several DC motor speed contro l circuits are revealed here....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Here is a simple circuit with NE555 IC that can be used to generate metronomes. Such circuit is very useful for those who....
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Its a simple circuit of 12V DC to 120V DC converter. The circuit consists of two phases first phase of the investor base and then a rectifier and filter stage. IC1 NE555 is wired as an astable multivibrator operating at a frequency of 100 Hz and can be....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The following is a small audio amplifier comparable to what you may come across a small transistor radio medium size. The....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The FM transmitter circuit is using NPN transistor 2N2222. The L1 and C1 producess necessary oscillations Q1. The collector....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Rain detector using In principle it is an astable multivibrator 555, which is prepared by IC555 with a sensor attached that....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is simple class A MOSFET amplifier 2SK1058 used in the circuit. It is easy to do, you should use a 24V supply volt at....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The circuit shown is a stereo FM PLL demodulator designed based on the AN7415. C1 is the input coupling capacitor to block any....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This a stereo tone control circuit built using LM1036 IC. This control circuit bass / treble tone level, volume and balance....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is just addition 20W audio amplifier circuit, but this time based on the LM1875 audio amplifier IC from National....
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Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in abounding fields. The ambit is....
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These accessories are low cost, aerial speed, bifold JFET ascribe operational amplifiers with an internally akin ascribe account voltage (BI-FET II technology). They crave low accumulation accepted yet advance a ample accretion bandage amplitude artefact and....
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To apperceive whether it is freezing you alone charge to admeasurement the temperature. This has to be done accurately, of course, and accordingly we charge to accept a temperature sensor that we accept some aplomb in. The best has afresh been fabricated for....
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When the amplifier is installed ashamed in the suitcase, we shall allegation a changeabout works stop. The LA47536 possesses a activity bend by in it pin4. This anguish crave a babyish astriction aloft to 2V in alpha up the amplifier. Transistor Q1 and Q2....
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When a short-circuit to ground occurs, which forces a DC voltage across the loudspeaker of >= V, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to <= V. Pin 12 detects the status of the protection circuit (e. g.....
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TDA7021T dent radio receiver abuttals is for carriageable radios, stereo as able as mono, breadth a minimum of abuttals is important in acceding of babyish abuttals and low cost. It is actually accordant for applications appliance the low-voltage micro....
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The telephone ring generator shown generates the bare aerial voltage from a simple switching approach ability accumulation (SMPS) which employs a CMOS Schmitt Trigger aboveboard beachcomber oscillator, 10 mH inductor, aerial voltage switching transistor....
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In this part of the inquiry in a series of 5-band Equalizer circuits with a single IC BA3812 L. a device used in the hi-fi. IC BA 3812 This is with 5-point Equalizer with all the functions integrated in IC. Equalizer has advantages, namely: small distortion,....
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This circuit is 6-band graphic equalizer, you can adjust the sound of low, medium and higher than the IC op amp circuit used 741. With this circuit you can control and mix of frequencies and tones to your liking. Audiblefrequency spectrum is covered in six....
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This is a simple alarm circuit for a checkup with a 4001. It can be used to protect our home, motorcycle, car or any other application that comes to mind. In this circuit will be a computer simulation with Livewire and then design the printed circuit Kicad.....
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This is the circuit of the amplifier channel stereo BTL 15W audio power IC based on TA 8215 developed by Toshiba. In this circuit, power amplifier, TA 8215 two ICs are used. This is for the acquisition of four channels has two channels of each IC. TA 8215 is....
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The circuit shows a simple triangle and square wave generator with a common dual operational amplifier LM1558 to produce very low frequencies around 10 kHz. The time interval for one half cycle is about R * C and outs of supply of 10 mA. The amplitude of the....
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This circuit diagram shows how a 555 timer IC is configured to perform as an astable multivibrator. An astable multivibrator is a timing circuit whose `low` and `high` states are each unstable. As such, the output of an astable multivibrator toggles between....
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What`s so special Well, first of all - a very low harmonic distortion. Usually, manufacturers indicate the maximum power of its regular ingenious handicrafts with the harmonic content of 10%. At the same chip, CT at the maximum specified power is only 0, 5%!....
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The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up and amplified by the electret microphone is fed into the audio amplifier stage built around the first transistor. Output from the collector is fed into....
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The ambit declared actuality is that of a metal detector. The opera- tion of the ambit is based on superheterodyning assumption which is frequently acclimated in superhet receivers. The ambit utilises two RF oscillators. The frequencies of both oscillators....
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L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you stick in utmost the resistance making thus a parallel L-r circuit. ) With their C7, C8 we adapt the resistance of aerial....
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The amplifier has an adjustable gain, which is performed by. R1 (a 1 Mega Ohm variable resistor). It controls the feedback of the 741 opamp, which in turn drive a 2N2222 output transistor. The circuit takes the audio signal rom the condenser microphone &....
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A high efficiency simple 2-transistor VHF amplifier electronic circuit project can be designed using this electronic circuit diagram. This VHF amplifier electronic circuit has a very high efficiency of about 16dB gain, and requires no tuning or alignment....
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This FM transmitter electronic project works in FM band and it has a transmission power around 250mW. This FM transmitter electronic circuit is very simple and is based on some common transistors and electronic parts. T1 transistor can be a BC107, BC171 or....
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Using ADF4007 high frequency divider PLL synthesizer can be designed a variety of communications applications. It can operate to 7. 5 GHz on the RF side and to 120 MHz at the PFD. It consists of a low noise digital PFD (phase frequency detector), a precision....
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The BA1404 fm stereo modulator Ic contains all parts needed to design an simple high efficiency stereo transmitter circuit, it contains a stereo modulator that creates stereo composites signals, an FM modulator that creates FM signals and a RF amplifier. The....
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These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET II technology). They require low supply current yet maintain a large gain band width product and fast slew rate. In....
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L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you stick in utmost the resistance making thus a parallel L-r circuit. ) With their C7, C8 we adapt the resistance of aerial....
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A very simple low power AM FM radio receiver electronic projects can be designed using the TA8122 integrated AM FM receiver, manufactured by Toshiba Semiconductor. This radio receiver circuit can be used for portable radio applications or other similar....
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A very simple low cost and ultra compact VHF UHF Low-Noise amplifiers circuit can be designed using the MAX2664 and MAX2665 ultra-compact LNAs for VHF/UHF applications. These devices incorporate a broadband LNA with an integrated bypass switch. The MAX2664....
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This is one of abounding accessible variations for a Symmetrical SRPP Preamplifier based about the 6DJ8 / ECC88 ancestors of tubes. The SRPP ambit has additionally been referred to as a SEPP, Totem Pole, Mu Follower, Mu amplifier and Cascoded Cathode....
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Air-cored inductor L1 consists of 13 turns of 1mm dia. enamelled copper wire with an inner diameter of 10mm. The completed inductor is pushed over R7 and its terminals soldered to those of the resistor. All electrolytic capacitors must be mounted upright.....
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This audio amplifier designed uses two LM3886 per channel, in parallel circuit, based on the PA100 parallel amplifier detailed in National Semiconductor`s application note - AN1192. This amplifier can deliver about 50W into a 8-ohm speaker and 100W into a....
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A very simple 12v battery charger circuit can be designed using a TIP3055 power transistor to limit the current to the battery by turning off when the battery voltage reaches approx 14v or if the current rises above 2 amp. This battery charger electronic....
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This car audio amplifier circuit is based on LA47536 audio amplifier integrated circuit designed by Sanyo. This audio amplifier circuit is specially designed for car audio power amplifiers and. LA47536 car audio amplifier IC has four output channels and is....
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This audio amplifier circuit is designed to deliver 2W per channel continuous into 8 © loads. The LM1877 is designed to operate with a low number of external components, and still provide flexibility for use in stereo phonographs, tape recorders and AM-FM....
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The TDA2004 is a class B dual audio power amplifier in MULTIWATT [package Designed specifically for car radio applications. TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very....
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This is a power amplifier circuit which built using a TDA2002 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short....
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The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. You you can also use this circuit for other purposes. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail....
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This is a 2 x 70W audio power amplifier circuit which built using single IC STA550. The amplifier circuit require few external components (most of them are resistors and capacitors) and is very easy to design The STA550 audio amplifier is capable to provide....
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This is a circuit of 2 x 22 watt BTL amplifier using IC TA8210AH. It is not only an auto amplifier, ideal for a low-frequency auditory approach those hi-fi, with a very good linear feature. Can be fueled by a 12 volt car battery but shi from a 12 volt....
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Here`s a circuit of 7 Watt audio amplifier that is very simple and very easy to build. This amplifier is built using TBA810 as the main component with the support of a few passive components. This circuit can work well, kits and components of this circuit....
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This is a 1 watt stereo audio amplifier circuit using IC TDA 7053 from Philips. It is particularly suited to battery operation, providing 1 watt per channel from only a 6V DC supply. It will operate best from 6 12 V DC and requires no heat-sink for normal....
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The following a circuit of 4 watt audio amplifier. The amplifier is using on integrated audio amplifier chip, TDA1013B which is able to gained the audio power output up to 4W at 8 ohm loads. The wide supply voltage range makes this amplifier circuit ideal....
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The following circuit shows about 35W quadruple amplifier and 2 x 25W bridge amplifier based on the TDA7375 IC, this circuit requests the minimum of external components. Although the first conception went to car applications, to give him/it in a great....
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Here is a simple subwoofer filter circuit that can be powered by a 12V DC. This circuit is very useful in automotive applications subwoofer. The circuit is a low pass filter whose pass frequency can be set between 60 to 160 Hz The circuit is built around the....
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MiniVol is my effort at a very simple volume control board based on the excellent TI PGA2320 volume control IC, which offers impressive specs and can operate over a range of -95. 5dB to +31. 5dB. It utilises a small Atmel AVR microcontroller to control the....
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the sound system, the massive de-sensitized, and they defeated a maximum range. This can be increased if desired, you can have two tone controls, the lifting of 10 dB and a cut and the other with a little help and very subtle 3dB cut - it is quite....
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This Instructible is entered in the Category: 13 - 18 of the National Robotics Week Robot Contest...
What do you do with an old phone, a microcontroller and lots of time? You hook the old phone`s LCD screen to the computer USB of course...
This project gives you a real time clock with the RTC chip DS1307. This RTC chip has inbuilt oscillator for clock and it has its own registers for full...
Attach any I2C client chip (thermo sensors, AD converter, displays, relais driver, to your PC via USB quick, easy and cheap! Drivers for Linux, Windows...
DESCRIPTION This project is to make a clone of Arduino Leonardo in a simple way.That is why the distribution of the pin does not match the standard Arduino...
Lux meter circuit atmel attiny26-16 microcontroller based on the value of the LED displays on the display lux with LEDs placed on 2sk1061 MOS...
PCM Powercom was founded in 1987, a leading provider of power protection products with ISO 9001 certificate. There are over 2,600 employees around the world...
The ATMEL AVR programmer works with the Windows program ""Ponyprog"" which works under 95, 98, XP...
PowerMan UPS/Inverters Uninterruptible power supplies and voltage regulators Business founded in 1993. Prior to 2000. company engaged in distribution...
Timers are widely used in industrial and domestic application for automating tasks. Microcontrollers can be used to design versatile and accurate timers with...
This project gives you a nice and simple scientific calculator using AVR microcontroller. It has 2 keypads as shown in the circuit diagram and the results are...
This simple circuit allows you to use your oscilloscope as a Time Domain Reflectometer (TDR). This is how it works. Send a pulse down a cable and watch for the...
For the last year I`ve been working on a prototype for a Solar Inverter that can be Grid Intertied. A solar inverter takes the 12V DC (or other voltages) from...
This project gives you a simple temperature controlled fan. If the difference between real temperature and the user temperature is high then the fan will run at...
I am presenting one application with the Nokia 3310 LCD: Designing a thermometer using DS1621 temperature sensor IC. DS1621 is 8-pin sensor from Maxim, with...
UPS Schematic Circuit Diagram for 3000 Watts UPS It can also work for 1000 VA with minor modifications...
There are numerous posts on Instructables about how to make a flickering LED candle. This is my version. The project requires the following components...
A single IC provides all amplifiers: 74HC04 Hex Inverter ( a digital element). The 2nd oscillator synchronizes to 3 times the 1st oscillator and thereforethe FM deviation is tripled. Using the lower freq f1 oscillator also enhancesfrequency stability. ..
Mods for JCM900-4100 Note: there are many versions of the schematic for this amp, proceed with caution!! VERIFY which version of the board you have by matching part numbers with the schematics posted...
This random timer circuit is based on a Atmel ATTINY24 avr driving one power relay. You can use this circuit to switch on and off other circuits randomly. For example, when using this circuit on a model railroad you can turn on and off parts of the animated....
There are basically two systems of pneumatic central locking on Audis of the vintage that I deal with - the earlier cars are controlled by the drivers door lock, and the later ones by both front door locks. The early ones (5000/100/200 before 1984,....
When SW1, SW2 or SW3 are open the input sensitivity is suited to high-output devices like CD players, tuners, tape recorders, iPods, miniDisc players, computer audio outputs etc. Sometimes, the 750 Ohm value for R3, R13 and R17 resistors could be not easy to....
This is the 8W audio amplifier with IC LM383 as the main component. Very simple, easy and cheap circuit...
Set R5 to read 1V RMS on an Audio Millivoltmeter connected to the output with R7 rotated fully clockwise, or to view a sinewave of 2. 828V Peak-to-Peak amplitude on the oscilloscope. An audio amplifier is an electronic amplifier that amplifies low-power....
As numerous or as few channels as are needed may be added to the mixer. Do this by just duplicating the input "sections" that are shown on the schematic design. An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals....
The following is the diagram of 5W audio amplifier circuit which built using power transistor BD139 and BD140 as the final gaining process. This small amplifier can be used as general purpose amplifier such as computer amplifier, radio, mp3 player, video....
This is a stereo amplifier circuit diagram. The amplifier will produce stereo output channel with the power audio output can reach up to 70W for each channel. The amplifier built based great amplifier chip STA550 from STMicroelectronics. Take a note that....
This is the schematic diagram of very simple headphone amplifier circuit. The circuit built using two NPN transistors. You can use transistor BC549C or other NPN transistors such as European equivalent: BC548C, BC547C, BC239, 2N5818 or 2N2222 An audio....
An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a....
The following diagram is the circuit of Stereo OTL Audio Amplifier. It based on IC circuit, so the circuit looks simple. You can use IC LM379, LM377, LM378 for this amplifier project. Refer to the table, maximum voltage supply for IC LM379 is 28V, it will....
Here is simple LED-power audio amplifier ambit with MOSFET amplifier TL071C and 2 may be up to 45 W into 8 ohms. For MOSFET IRFP240 and IRFP9240 are acclimated assurance with accessory can now be these modification. The arrangement is at the appeal SILICONIX....
This is a stereo circuit schematic of the ADAU1592, a 2-channel, bridge-tied amount (BTL) switching audio ability amplifier. You can administer ADAU1592 on collapsed console televisions, pc audio arrangement and/or mini-components applications. According to....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The 1K resistors in the circuit are capital so that the LED`s about-face on at altered audio levels. There is no acumen why....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This mixer shows you how to accomplish microphone pre-amps for low and hi impedance mics. Use the everyman babble op-amp you....
The antenna amplifier circuit has a part count of about 40, using the following active parts: 2 NPN transistors (BC548`s), 1 MOSFET (BF981), 2 Varicap diodes (KV1235), as well as a 6v2 zener-diode. there is and a 330uH (micro Henry) inductor / coil, which....
High frequency waveform generator is very useful in electronic experiment and design. This circuit generate sine wave oscillation, but actually we can modify the circuit to generate triangle or square wave function. The frequency can be controlled using....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. a 32. 768 KHz square wave from a common watch crystal. The output can be fed to a 15 stage binary counter to obtain a 1 second....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is the circuit quality preamplifier with built-in USB DAC for my Leachamp power amplifier. Scheme is PCM2902 datasheet.....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. A simple DC motor controller circuit with NE555 is shown here. several DC motor speed contro l circuits are revealed here....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Here is a simple circuit with NE555 IC that can be used to generate metronomes. Such circuit is very useful for those who....
Its a simple circuit of 12V DC to 120V DC converter. The circuit consists of two phases first phase of the investor base and then a rectifier and filter stage. IC1 NE555 is wired as an astable multivibrator operating at a frequency of 100 Hz and can be....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The following is a small audio amplifier comparable to what you may come across a small transistor radio medium size. The....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The FM transmitter circuit is using NPN transistor 2N2222. The L1 and C1 producess necessary oscillations Q1. The collector....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Rain detector using In principle it is an astable multivibrator 555, which is prepared by IC555 with a sensor attached that....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is simple class A MOSFET amplifier 2SK1058 used in the circuit. It is easy to do, you should use a 24V supply volt at....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. The circuit shown is a stereo FM PLL demodulator designed based on the AN7415. C1 is the input coupling capacitor to block any....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This a stereo tone control circuit built using LM1036 IC. This control circuit bass / treble tone level, volume and balance....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. This is just addition 20W audio amplifier circuit, but this time based on the LM1875 audio amplifier IC from National....
Welcome to the weblog where we discuss about electronic circuits schematics, PCB design, diy kits and electronic projects diagrams. Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in abounding fields. The ambit is....
These accessories are low cost, aerial speed, bifold JFET ascribe operational amplifiers with an internally akin ascribe account voltage (BI-FET II technology). They crave low accumulation accepted yet advance a ample accretion bandage amplitude artefact and....
To apperceive whether it is freezing you alone charge to admeasurement the temperature. This has to be done accurately, of course, and accordingly we charge to accept a temperature sensor that we accept some aplomb in. The best has afresh been fabricated for....
When the amplifier is installed ashamed in the suitcase, we shall allegation a changeabout works stop. The LA47536 possesses a activity bend by in it pin4. This anguish crave a babyish astriction aloft to 2V in alpha up the amplifier. Transistor Q1 and Q2....
When a short-circuit to ground occurs, which forces a DC voltage across the loudspeaker of >= V, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to <= V. Pin 12 detects the status of the protection circuit (e. g.....
TDA7021T dent radio receiver abuttals is for carriageable radios, stereo as able as mono, breadth a minimum of abuttals is important in acceding of babyish abuttals and low cost. It is actually accordant for applications appliance the low-voltage micro....
The telephone ring generator shown generates the bare aerial voltage from a simple switching approach ability accumulation (SMPS) which employs a CMOS Schmitt Trigger aboveboard beachcomber oscillator, 10 mH inductor, aerial voltage switching transistor....
In this part of the inquiry in a series of 5-band Equalizer circuits with a single IC BA3812 L. a device used in the hi-fi. IC BA 3812 This is with 5-point Equalizer with all the functions integrated in IC. Equalizer has advantages, namely: small distortion,....
This circuit is 6-band graphic equalizer, you can adjust the sound of low, medium and higher than the IC op amp circuit used 741. With this circuit you can control and mix of frequencies and tones to your liking. Audiblefrequency spectrum is covered in six....
This is a simple alarm circuit for a checkup with a 4001. It can be used to protect our home, motorcycle, car or any other application that comes to mind. In this circuit will be a computer simulation with Livewire and then design the printed circuit Kicad.....
This is the circuit of the amplifier channel stereo BTL 15W audio power IC based on TA 8215 developed by Toshiba. In this circuit, power amplifier, TA 8215 two ICs are used. This is for the acquisition of four channels has two channels of each IC. TA 8215 is....
The circuit shows a simple triangle and square wave generator with a common dual operational amplifier LM1558 to produce very low frequencies around 10 kHz. The time interval for one half cycle is about R * C and outs of supply of 10 mA. The amplitude of the....
This circuit diagram shows how a 555 timer IC is configured to perform as an astable multivibrator. An astable multivibrator is a timing circuit whose `low` and `high` states are each unstable. As such, the output of an astable multivibrator toggles between....
What`s so special Well, first of all - a very low harmonic distortion. Usually, manufacturers indicate the maximum power of its regular ingenious handicrafts with the harmonic content of 10%. At the same chip, CT at the maximum specified power is only 0, 5%!....
The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio picked up and amplified by the electret microphone is fed into the audio amplifier stage built around the first transistor. Output from the collector is fed into....
The ambit declared actuality is that of a metal detector. The opera- tion of the ambit is based on superheterodyning assumption which is frequently acclimated in superhet receivers. The ambit utilises two RF oscillators. The frequencies of both oscillators....
L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you stick in utmost the resistance making thus a parallel L-r circuit. ) With their C7, C8 we adapt the resistance of aerial....
The amplifier has an adjustable gain, which is performed by. R1 (a 1 Mega Ohm variable resistor). It controls the feedback of the 741 opamp, which in turn drive a 2N2222 output transistor. The circuit takes the audio signal rom the condenser microphone &....
A high efficiency simple 2-transistor VHF amplifier electronic circuit project can be designed using this electronic circuit diagram. This VHF amplifier electronic circuit has a very high efficiency of about 16dB gain, and requires no tuning or alignment....
This FM transmitter electronic project works in FM band and it has a transmission power around 250mW. This FM transmitter electronic circuit is very simple and is based on some common transistors and electronic parts. T1 transistor can be a BC107, BC171 or....
Using ADF4007 high frequency divider PLL synthesizer can be designed a variety of communications applications. It can operate to 7. 5 GHz on the RF side and to 120 MHz at the PFD. It consists of a low noise digital PFD (phase frequency detector), a precision....
The BA1404 fm stereo modulator Ic contains all parts needed to design an simple high efficiency stereo transmitter circuit, it contains a stereo modulator that creates stereo composites signals, an FM modulator that creates FM signals and a RF amplifier. The....
These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET II technology). They require low supply current yet maintain a large gain band width product and fast slew rate. In....
L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you stick in utmost the resistance making thus a parallel L-r circuit. ) With their C7, C8 we adapt the resistance of aerial....
A very simple low power AM FM radio receiver electronic projects can be designed using the TA8122 integrated AM FM receiver, manufactured by Toshiba Semiconductor. This radio receiver circuit can be used for portable radio applications or other similar....
A very simple low cost and ultra compact VHF UHF Low-Noise amplifiers circuit can be designed using the MAX2664 and MAX2665 ultra-compact LNAs for VHF/UHF applications. These devices incorporate a broadband LNA with an integrated bypass switch. The MAX2664....
This is one of abounding accessible variations for a Symmetrical SRPP Preamplifier based about the 6DJ8 / ECC88 ancestors of tubes. The SRPP ambit has additionally been referred to as a SEPP, Totem Pole, Mu Follower, Mu amplifier and Cascoded Cathode....
Air-cored inductor L1 consists of 13 turns of 1mm dia. enamelled copper wire with an inner diameter of 10mm. The completed inductor is pushed over R7 and its terminals soldered to those of the resistor. All electrolytic capacitors must be mounted upright.....
This audio amplifier designed uses two LM3886 per channel, in parallel circuit, based on the PA100 parallel amplifier detailed in National Semiconductor`s application note - AN1192. This amplifier can deliver about 50W into a 8-ohm speaker and 100W into a....
A very simple 12v battery charger circuit can be designed using a TIP3055 power transistor to limit the current to the battery by turning off when the battery voltage reaches approx 14v or if the current rises above 2 amp. This battery charger electronic....
This car audio amplifier circuit is based on LA47536 audio amplifier integrated circuit designed by Sanyo. This audio amplifier circuit is specially designed for car audio power amplifiers and. LA47536 car audio amplifier IC has four output channels and is....
This audio amplifier circuit is designed to deliver 2W per channel continuous into 8 © loads. The LM1877 is designed to operate with a low number of external components, and still provide flexibility for use in stereo phonographs, tape recorders and AM-FM....
The TDA2004 is a class B dual audio power amplifier in MULTIWATT [package Designed specifically for car radio applications. TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very....
This is a power amplifier circuit which built using a TDA2002 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short....
The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. You you can also use this circuit for other purposes. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail....
This is a 2 x 70W audio power amplifier circuit which built using single IC STA550. The amplifier circuit require few external components (most of them are resistors and capacitors) and is very easy to design The STA550 audio amplifier is capable to provide....
This is a circuit of 2 x 22 watt BTL amplifier using IC TA8210AH. It is not only an auto amplifier, ideal for a low-frequency auditory approach those hi-fi, with a very good linear feature. Can be fueled by a 12 volt car battery but shi from a 12 volt....
Here`s a circuit of 7 Watt audio amplifier that is very simple and very easy to build. This amplifier is built using TBA810 as the main component with the support of a few passive components. This circuit can work well, kits and components of this circuit....
This is a 1 watt stereo audio amplifier circuit using IC TDA 7053 from Philips. It is particularly suited to battery operation, providing 1 watt per channel from only a 6V DC supply. It will operate best from 6 12 V DC and requires no heat-sink for normal....
The following a circuit of 4 watt audio amplifier. The amplifier is using on integrated audio amplifier chip, TDA1013B which is able to gained the audio power output up to 4W at 8 ohm loads. The wide supply voltage range makes this amplifier circuit ideal....
The following circuit shows about 35W quadruple amplifier and 2 x 25W bridge amplifier based on the TDA7375 IC, this circuit requests the minimum of external components. Although the first conception went to car applications, to give him/it in a great....
Here is a simple subwoofer filter circuit that can be powered by a 12V DC. This circuit is very useful in automotive applications subwoofer. The circuit is a low pass filter whose pass frequency can be set between 60 to 160 Hz The circuit is built around the....
MiniVol is my effort at a very simple volume control board based on the excellent TI PGA2320 volume control IC, which offers impressive specs and can operate over a range of -95. 5dB to +31. 5dB. It utilises a small Atmel AVR microcontroller to control the....
the sound system, the massive de-sensitized, and they defeated a maximum range. This can be increased if desired, you can have two tone controls, the lifting of 10 dB and a cut and the other with a little help and very subtle 3dB cut - it is quite....
