Top Circuits Page 117
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When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by....
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Using a single 555 Timer IC and a small transformer to generate a high voltage, this circuit will test zener diodes of voltage ratings up to 50VDC. The 555 timer is used in the astable mode, the output at pin3 drives a small audio transformer such as the....
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The circuit for the Digital Tachometer/RPM Counter consists of only a few devices. Wire them up according to the following circuit diagram. The PIC I`m using is on a demonstration board, which means the clock, power and ground pins are already wired up so I....
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The MP3 files (up 65, 536) are stored in a micro SDcard. This embedded MP3 module is an universal and compact circuit (37 mm x 27 mm) for playing MP3 audio files. The MP3 module can be used in embedded systems. Usually, the audio output from a laptop`s....
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This low current relay circuit is designed to be used in battery operated electronic devices. Its operating current is in micro amperes ( µA). This is done by using a bistable relay and adding some components to force the relay to behave like a monostable....
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Digital clock project based on the PIC16C54 microcontroller can be designed using the following circuit diagram. This digital clock electronic project based on the PIC16C54 is a simple time-of-day clock incorporating four seven-segment LED displays and three....
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If you are a newbie and having the similar experience, here I suggest a general purpose I/O board that will not only reduce your prototyping time but also free up plenty of space on the breadboard for your project. The construction of this board is very....
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Nowadays, USB is the most popular connection connection between PC and peripherals such as AVR programmers, printers, scanners etc. For that reason I had to modify my old serial AVR In-System-Programmer (ISP) to work with USB connection. You can say, "use a....
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Clock and Load functions, with Load being the first function described. U5, CD4013, performs the load function by controlling whether the shift register ICs are in the parallel or serial mode. For 99. 99% of the time, the shift registers are in the serial....
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The panels look good and the cases are neat. What are the cases made from. MDF board I noticed the panels are recessed quite a bit too. I`m guessing this is to protect the knobs etc. I`m curious how deep your cases are I`m working on getting my circuits....
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I added a second RM output and a sync input to the 555. The latter is based off of one of Rene Schmitz VCOs. ( ) ok, thank you. i asked because on the two PCB pictures above there are e. g. two transistors without any specification. the wiard schematics....
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Hack the pitch shift of the crash and ride by lifting pin 10 of the TC4040 binary counter and insert your own clock in (or just whack it with an additional clock source). This could be any suitable signal you pick up from the TR itself. The other sounds do....
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Doing this atari Sequencer and I think there`s an error in the drawing can not see. the atari is working but when I press the switch to ring the Sequencer, the sound disappears. please help. I don`t know if it will solve your problem, but your pin 13 at the....
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It`s basically just an all-pass filter with two components added: a capacitor and a resistor. And it`s making percussion sounds! wow! See the attachments below for a schematic of the unmodified all-pass filter circuit, a waveform captured via Audacity, and a....
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H-bridge is a circuit configuration that allows the designer to apply the voltages in both directions. H-bridge also allows higher voltage and current to be applied to the load while controlling the direction through a low voltage signal. The illustration....
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This is BTL(bridged tied load) mono amplifier with DC volume Control circuit. This circuit uses TDA7052A/AT that is suitable not only for monitors and TV but also battery fed portable radios and recorders. The difference between conventional DC volume....
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Voltage controlled oscillator (VCO) is similar to a voltage to frequency converter (VFC), an oscillator which its output frequency is determined by a control voltage input. This is the figure of the circuit; Where d is the amplifier input voltage = 0. 6V,....
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This series-feedback series of compounds give a high input impedance and stable, gain wide-band video amplifier for general purpose applications. This is the figure of the circuit;..
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Although you may well be the proud owner of the very latest NiCd battery charger, you may still come across the odd `incompatible` battery, for example, one having a rare voltage or requiring a much higher charging current than can be supplied by your....
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This LED Flasher circuit is based on the 555 timer IC. The LED Flasher circuit diagram is very simple and require few external components. When the circuit is working the red LEDs will flash at a set frequency one by one like at the railway crossing indicator...
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Using this 555 timer DC motor control electronic project you can control speed of a 6 volts DC motor, by simply rotate left or right the 50 k potentiometer...
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The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two metal electrodes arranged very close that a drop of water (liquid) will bridge them. If the liquid ( water ) is very pure you may....
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NCP2830 audio power amplifier main features are : high quality audio (THD+N = 0. 04%), low noise: SNR up to 100 dB, overall system efficiency optimization: up to 89%, Superior PSRR ( ’88 dB): Direct Connection to Battery, Very Low Quiescent Current 7 mA,....
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This LM12 audio amplifier circuit will provide a high output power on a 8 ohms or 4 ohms load impedance. The maximum output power delivered by this LM12 audio amplifier is around 60 watts on a 4 ohms load and 100 watts on a 4 ohms load on each channel. A....
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Using the LM2876 audio power amplifier circuit can be designed a very simple high efficiency power audio amplifier capable of delivering 40W of continuous average power to an 8 © load with 0. 1% THD+N from 20Hz 20kHz. The LM2876 audio power amplifier circuit....
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A dynamic microphone preamplifier can be realized using LM387 dual operational amplifier integrated circuit. Input impedance corresponds to 47k, it depends almost exclusively by R1. If you wish to connect a dynamic microphone with a different value, the....
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The TDA1519 circuit can deliver 2x6 watts output power. TDA1519 is an integrated class-B dual output amplifier in a 9-lead single in-line (SIL) plastic medium power package is primarily developed for car radio applications...
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Using TDA2003 audio amplifier integrated circuit can be designed a very simple 10 watts power audio amplifier on a 2 ohms load or 4 watts on a 4 ohms load. The TDA2003 device provides a high output current capability (up to 3. 5A) very low harmonic and....
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This TDA2005 car audio amplifier circuit is specially designed to work on devices like : car radios, cd-players and similar devices. This car radio audio amplifier circuit is based on the TDA2005 audio IC which can provide a maximum output power of 20 watts....
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Using TDA7262 integrated circuit manufactured by ST Microelectronics can be designed a very simple stereo audio amplifier electronic project which can provide a maximum output power of 20 watts per channel. TDA7262 is an ( class AB ) dual Hi-Fi Audio power....
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The input capacitor is for the low frequency cut-off and the standard value for the input capacitors is 0. 1uF ( the cut-off for this value is amount to 16Hz)...
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This high power class D audio amplifier electronic project is designed using the TDA8920BTH audio power amplifier IC. This power amplifier audio IC has a very high efficiency with very low dissipation, providing a very high output power. The typical output....
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This universal battery charger is based on LM317 and has an adjustable regulated output voltage and also has an adjustable constant-current charging circuit that makes it suitable to use for charging most NiCad batteries and some other types of batteries.....
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This LM350 Car battery charger circuit project is a high performance charger that quickly charges gelled lead-acid batteries and turns off the charger process at full charge. This LM350 Car battery charger circuit will provide a charge current of 2A when the....
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This Sealed Lead Acid Battery Charger is deigned using the LT3755 DC DC controller. The LT3755 is a DC DC controller designed to operate as a constant-current source and supports a wide input voltage range from 4. 5 up to 40 volts and a can provide a maximum....
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Using the LTC4000 high voltage controller designed by Linear Technology, can be designed a very simple high current LiFePO4 battery charger that will provide a fixed output voltage of 12 volts at a maximum output current of 15 A. Features of the LTC4000`s....
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Since the maximum charge voltage measures 1. 45 volts and higher trigger threshold is about 1. 7 V, this voltage can be adjusted using potentiometer P1 to the value of 1. 45 volts. TTL control signal output by the voltage divider R4/R5, constant current....
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For this simple lead acid battery charger we need a center tapped transformer (12V 0V 12V) which need to give a 5 amperes current, two diodes and one capacitor. To charge the batteries we need to connect the terminal + and - from the charger to the same....
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This USB car charger adapter project is a DC DC power converter that safely converts the 12V car battery voltage into stable 5V. This USB car charger circuit can be used to supply power from a car cigar lighter socket to a portable device that require a 5....
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Burst Mode operation maintains high efficiency at light loads by reducing IC quiescent current to 120 A. Light load efficiency is also improved with the reverse inductor current inhibit function which supports discontinuous operation. Additional features....
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Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator....
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This 15v variable power supply electronic project is designed using 2N3055 transistors. Output voltage of this variable power supply can be adjusted in the range between 1. 5 and 15 volts. This 2N3055 15v variable power supply can provide a maximum current....
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Using the LT3692 dual current mode PWM step-down DC DC converter circuit with two internal 3. 5A switches can be designed a very simple power supply circuit, that can be used for various electronic circuits applications like : distributed supply regulations....
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A simple lab power supply electronic project can be designed using this circuit diagram which is based on the LM2576 monolithic integrated regulator that provide all the active functions for a step-down (buck) switching regulator. As you can see in the....
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By using a potentiometer, R2, as one of the resistors you can dial up the output voltage wanted. Either AC or DC input can be supplied to the Kit via a socket or terminal block. When external capacitors are used with any IC regulator it is good practice to....
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As you can see in the circuit diagram this LM317 power supply electronic project require few external components. The input voltage required by this electronic project must be between 8 and 35 volt, and will provide a variable output voltage over a wide....
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LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
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This LM723 variable power supply circuit design is a very simple variable power supply that will provide an output voltage between 8 and 30 volt at a maximum output current of 3 ampere. This LM723 variable power supply circuit design project has a very low....
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Using LM723 regulator can be designed a very simple variable power supply circuit which can provide a maximum current up to 2A and a variable voltage between 2 and 25 volts...
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This fm transmitter circuit is very simple and it has a acceptable transmission. The signal transited from this fm transmitter circuit can be received at almost 300 meters in open air. The circuit require a 3volts operating voltage and can be tuned anywhere....
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Using BA1404 can be designed a very simple and useful fm stereo modulator electronic project. This BA1404 fm stereo modulator device works in FM broadcast band ( 75- 108MHz) and require few external common components. The BA1404 fm stereo modulator Ic....
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This stereo FM stereo modulator circuit use the BH1417F FM stereo transmitter IC which consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM signal on the air. The stereo modulator generates a....
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Tank circuit C2 and L1 is used to tune the transmitter. The antenna is coupled to the transmitter through C3 and must be a telescopic antenna or a length of hookup wire. At the receiver, the incoming signal is tuned by C4 and L2 before being passed on to the....
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Using this electronic schematic, can be designed a very simple cellular phone detector circuit which can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. The C3 capacitor must have leads length of 18 mm with 8 mm....
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As you can see in this FM IF MW radio receiver circuit schematic the LA1260 ic can be used in AM FM radio receiver electronic projects. LA1260 has integrated in the package many functions and features that are needed for radio receiver applications. high S/N....
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This portable am fm radio circuit is designed using the LA1800 IC and some other external components. As you can see in this circuit diagram the LA1800 manufactured by Sanyo Semiconductors, require few additional components. Also the output signal is driven....
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A very simple single sideband (SSB) suppressed carrier demodulator (product detector) circuit can be designed using the LM1596 balanced modulator-demodulators IC. The carrier signal is applied to the carrier input port with sufficient amplitude for switching....
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A very simple FM transmitter circuit can be designed using MC2833 integrated circuit, designed for cordless telephone and FM communication equipment. It includes a microphone amplifier, voltage controlled oscillator and two auxiliary transistors. The final....
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This MK484 AM radio circuit provides a complete solution including : RF amplifier, Detection and AGC circuit (automatic gain control ), which requires only a few external components to give a high quality AM Tuner. The circuit has an input impedance of....
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Oscillating circuit (coil) are made on a ferrite bar. If you wish to listen long waves winding "1-2" has 135 turns and 3-4 has 20 turns. If you wish to receive medium wave winding "1-2" has 75 turns, and "3-4" has 7 turns (wire used must be CuEm 0. 15mm). In....
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This electronic rf detector electronic project is designed using common transistors and other few common electronic parts. This rf detector responds to RF signals bellow the standard broadcast band to well over 500 MHz and provides an visual, and audible....
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All coils are designed using an inch diameter pvc pipe using 20 gauge insulated hookup wire, L1 require 6 turns and L2 require 14 turns. You can add turns to or subtract turns from L(or change C2) to receive other frequencies. Q2 and Q3 form an amplifier,....
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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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TDA7088 contains a frequency-locked-loop (FLL) system with an Intermediate Frequency (IF) of about 70 kHz. For supplying this circuit we can use an 3 volts battery cell or a regulated power supply...
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The pilot detector output is designed as an open collector output, therefore an external pull up resistor is needed. To force the decoder to "MONO" Pin 19 has to be clamped to a voltage below 0. 8V...
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The IC is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing. A special function is implemented for the demodulation of FM radio signals....
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Using TEA5551T monolithic integrated radio circuit can be designed a AM radio receiver circuit which is designed for use as a portable radio receiver with headphones. The TEA5551T radio receiver circuit contains all is needed for a AM radio receiver circuit....
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Using the UPC1651 FM monolithic circuit can be designed a very simple low cost FM transmitter electronic project. This UPC1651 FM transmitter circuit is specially designed as a wide band amplifier covering the HF band trough UHF band. Audio signal from the....
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This infrared detector circuit is designed using the PID20 integrated circuit manufactured by Siemens (which converts thermal radiation into electrical impulses), an operational amplifier and a few electronic components. The output signal at pin 3 is....
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This metal detector electronic project schematic circuit is designed using a simple 555 timer integrated circuit. As you can see in the schematic circuit, this metal detector electronic project requires few external electronic parts...
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A very simple proximity detector electronic project can be designed using this schematic circuit. This proximity detector electronic project use a tone decoder integrated circuit ( NE567 ) that will provides a signal with a frequency about 100Khz. When an....
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A very simple high power alarm driver electronic project can be designed using this circuit diagram. This high power alarm driver electronic project is based on low power SCR which trigger a high power SCR. When a switch is opening (S2, S3, S4) or closing....
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Using the RE46C140 circuit can be designed a very simple smoke detector alarm using few external electronic components. The RE46C140 IC is a low power CMOS photoelectric type smoke detector IC that will provide all the required features for a photoelectric....
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This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signal produced by oscillator N3/N4. At the touch sensor hand capacity forms a bridge to the ground for....
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This heat detector alarm electronic project is designed using the UM3561 sound generator circuit and some other common electronic parts. This heat detector circuit project uses a complementary pair comprising npn and pnp transistor to detect heat. When the....
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A very simple low cost water level indicator circuit can be designed using this schematic circuit. This water level indicator is based on a simple CMOS IC CD4066 and indicates the amount of water present in the overhead tank and also gives an alarm when the....
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Using this schematic electronic project can be designed a very simple water level indicator electronic circuit that uses a 7-segment display to indicate the water level (low, half and full)in the tank. This water level indicator electronic circuit shows the....
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The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achievement with adjustable accretion are additionally provided...
When the water is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by....
Using a single 555 Timer IC and a small transformer to generate a high voltage, this circuit will test zener diodes of voltage ratings up to 50VDC. The 555 timer is used in the astable mode, the output at pin3 drives a small audio transformer such as the....
The circuit for the Digital Tachometer/RPM Counter consists of only a few devices. Wire them up according to the following circuit diagram. The PIC I`m using is on a demonstration board, which means the clock, power and ground pins are already wired up so I....
The MP3 files (up 65, 536) are stored in a micro SDcard. This embedded MP3 module is an universal and compact circuit (37 mm x 27 mm) for playing MP3 audio files. The MP3 module can be used in embedded systems. Usually, the audio output from a laptop`s....
This low current relay circuit is designed to be used in battery operated electronic devices. Its operating current is in micro amperes ( µA). This is done by using a bistable relay and adding some components to force the relay to behave like a monostable....
Digital clock project based on the PIC16C54 microcontroller can be designed using the following circuit diagram. This digital clock electronic project based on the PIC16C54 is a simple time-of-day clock incorporating four seven-segment LED displays and three....
If you are a newbie and having the similar experience, here I suggest a general purpose I/O board that will not only reduce your prototyping time but also free up plenty of space on the breadboard for your project. The construction of this board is very....
Nowadays, USB is the most popular connection connection between PC and peripherals such as AVR programmers, printers, scanners etc. For that reason I had to modify my old serial AVR In-System-Programmer (ISP) to work with USB connection. You can say, "use a....
Clock and Load functions, with Load being the first function described. U5, CD4013, performs the load function by controlling whether the shift register ICs are in the parallel or serial mode. For 99. 99% of the time, the shift registers are in the serial....
The panels look good and the cases are neat. What are the cases made from. MDF board I noticed the panels are recessed quite a bit too. I`m guessing this is to protect the knobs etc. I`m curious how deep your cases are I`m working on getting my circuits....
I added a second RM output and a sync input to the 555. The latter is based off of one of Rene Schmitz VCOs. ( ) ok, thank you. i asked because on the two PCB pictures above there are e. g. two transistors without any specification. the wiard schematics....
Hack the pitch shift of the crash and ride by lifting pin 10 of the TC4040 binary counter and insert your own clock in (or just whack it with an additional clock source). This could be any suitable signal you pick up from the TR itself. The other sounds do....
Doing this atari Sequencer and I think there`s an error in the drawing can not see. the atari is working but when I press the switch to ring the Sequencer, the sound disappears. please help. I don`t know if it will solve your problem, but your pin 13 at the....
It`s basically just an all-pass filter with two components added: a capacitor and a resistor. And it`s making percussion sounds! wow! See the attachments below for a schematic of the unmodified all-pass filter circuit, a waveform captured via Audacity, and a....
H-bridge is a circuit configuration that allows the designer to apply the voltages in both directions. H-bridge also allows higher voltage and current to be applied to the load while controlling the direction through a low voltage signal. The illustration....
This is BTL(bridged tied load) mono amplifier with DC volume Control circuit. This circuit uses TDA7052A/AT that is suitable not only for monitors and TV but also battery fed portable radios and recorders. The difference between conventional DC volume....
Voltage controlled oscillator (VCO) is similar to a voltage to frequency converter (VFC), an oscillator which its output frequency is determined by a control voltage input. This is the figure of the circuit; Where d is the amplifier input voltage = 0. 6V,....
Although you may well be the proud owner of the very latest NiCd battery charger, you may still come across the odd `incompatible` battery, for example, one having a rare voltage or requiring a much higher charging current than can be supplied by your....
This LED Flasher circuit is based on the 555 timer IC. The LED Flasher circuit diagram is very simple and require few external components. When the circuit is working the red LEDs will flash at a set frequency one by one like at the railway crossing indicator...
Using this 555 timer DC motor control electronic project you can control speed of a 6 volts DC motor, by simply rotate left or right the 50 k potentiometer...
The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two metal electrodes arranged very close that a drop of water (liquid) will bridge them. If the liquid ( water ) is very pure you may....
NCP2830 audio power amplifier main features are : high quality audio (THD+N = 0. 04%), low noise: SNR up to 100 dB, overall system efficiency optimization: up to 89%, Superior PSRR ( ’88 dB): Direct Connection to Battery, Very Low Quiescent Current 7 mA,....
This LM12 audio amplifier circuit will provide a high output power on a 8 ohms or 4 ohms load impedance. The maximum output power delivered by this LM12 audio amplifier is around 60 watts on a 4 ohms load and 100 watts on a 4 ohms load on each channel. A....
Using the LM2876 audio power amplifier circuit can be designed a very simple high efficiency power audio amplifier capable of delivering 40W of continuous average power to an 8 © load with 0. 1% THD+N from 20Hz 20kHz. The LM2876 audio power amplifier circuit....
A dynamic microphone preamplifier can be realized using LM387 dual operational amplifier integrated circuit. Input impedance corresponds to 47k, it depends almost exclusively by R1. If you wish to connect a dynamic microphone with a different value, the....
The TDA1519 circuit can deliver 2x6 watts output power. TDA1519 is an integrated class-B dual output amplifier in a 9-lead single in-line (SIL) plastic medium power package is primarily developed for car radio applications...
Using TDA2003 audio amplifier integrated circuit can be designed a very simple 10 watts power audio amplifier on a 2 ohms load or 4 watts on a 4 ohms load. The TDA2003 device provides a high output current capability (up to 3. 5A) very low harmonic and....
This TDA2005 car audio amplifier circuit is specially designed to work on devices like : car radios, cd-players and similar devices. This car radio audio amplifier circuit is based on the TDA2005 audio IC which can provide a maximum output power of 20 watts....
Using TDA7262 integrated circuit manufactured by ST Microelectronics can be designed a very simple stereo audio amplifier electronic project which can provide a maximum output power of 20 watts per channel. TDA7262 is an ( class AB ) dual Hi-Fi Audio power....
The input capacitor is for the low frequency cut-off and the standard value for the input capacitors is 0. 1uF ( the cut-off for this value is amount to 16Hz)...
This high power class D audio amplifier electronic project is designed using the TDA8920BTH audio power amplifier IC. This power amplifier audio IC has a very high efficiency with very low dissipation, providing a very high output power. The typical output....
This universal battery charger is based on LM317 and has an adjustable regulated output voltage and also has an adjustable constant-current charging circuit that makes it suitable to use for charging most NiCad batteries and some other types of batteries.....
This LM350 Car battery charger circuit project is a high performance charger that quickly charges gelled lead-acid batteries and turns off the charger process at full charge. This LM350 Car battery charger circuit will provide a charge current of 2A when the....
This Sealed Lead Acid Battery Charger is deigned using the LT3755 DC DC controller. The LT3755 is a DC DC controller designed to operate as a constant-current source and supports a wide input voltage range from 4. 5 up to 40 volts and a can provide a maximum....
Using the LTC4000 high voltage controller designed by Linear Technology, can be designed a very simple high current LiFePO4 battery charger that will provide a fixed output voltage of 12 volts at a maximum output current of 15 A. Features of the LTC4000`s....
Since the maximum charge voltage measures 1. 45 volts and higher trigger threshold is about 1. 7 V, this voltage can be adjusted using potentiometer P1 to the value of 1. 45 volts. TTL control signal output by the voltage divider R4/R5, constant current....
For this simple lead acid battery charger we need a center tapped transformer (12V 0V 12V) which need to give a 5 amperes current, two diodes and one capacitor. To charge the batteries we need to connect the terminal + and - from the charger to the same....
This USB car charger adapter project is a DC DC power converter that safely converts the 12V car battery voltage into stable 5V. This USB car charger circuit can be used to supply power from a car cigar lighter socket to a portable device that require a 5....
Burst Mode operation maintains high efficiency at light loads by reducing IC quiescent current to 120 A. Light load efficiency is also improved with the reverse inductor current inhibit function which supports discontinuous operation. Additional features....
Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator....
This 15v variable power supply electronic project is designed using 2N3055 transistors. Output voltage of this variable power supply can be adjusted in the range between 1. 5 and 15 volts. This 2N3055 15v variable power supply can provide a maximum current....
Using the LT3692 dual current mode PWM step-down DC DC converter circuit with two internal 3. 5A switches can be designed a very simple power supply circuit, that can be used for various electronic circuits applications like : distributed supply regulations....
A simple lab power supply electronic project can be designed using this circuit diagram which is based on the LM2576 monolithic integrated regulator that provide all the active functions for a step-down (buck) switching regulator. As you can see in the....
By using a potentiometer, R2, as one of the resistors you can dial up the output voltage wanted. Either AC or DC input can be supplied to the Kit via a socket or terminal block. When external capacitors are used with any IC regulator it is good practice to....
As you can see in the circuit diagram this LM317 power supply electronic project require few external components. The input voltage required by this electronic project must be between 8 and 35 volt, and will provide a variable output voltage over a wide....
LM317HV adjustable regulator is capable of supplying in excess of 1. 5A over a 1. 2V to 57V output range. The design of these high current power supply is very easy, because the LM317HV require just few external resistors to set the output voltage. Further,....
This LM723 variable power supply circuit design is a very simple variable power supply that will provide an output voltage between 8 and 30 volt at a maximum output current of 3 ampere. This LM723 variable power supply circuit design project has a very low....
Using LM723 regulator can be designed a very simple variable power supply circuit which can provide a maximum current up to 2A and a variable voltage between 2 and 25 volts...
This fm transmitter circuit is very simple and it has a acceptable transmission. The signal transited from this fm transmitter circuit can be received at almost 300 meters in open air. The circuit require a 3volts operating voltage and can be tuned anywhere....
Using BA1404 can be designed a very simple and useful fm stereo modulator electronic project. This BA1404 fm stereo modulator device works in FM broadcast band ( 75- 108MHz) and require few external common components. The BA1404 fm stereo modulator Ic....
This stereo FM stereo modulator circuit use the BH1417F FM stereo transmitter IC which consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM signal on the air. The stereo modulator generates a....
Tank circuit C2 and L1 is used to tune the transmitter. The antenna is coupled to the transmitter through C3 and must be a telescopic antenna or a length of hookup wire. At the receiver, the incoming signal is tuned by C4 and L2 before being passed on to the....
Using this electronic schematic, can be designed a very simple cellular phone detector circuit which can sense the presence of an activated mobile cell phone from a distance of one and-a-half meters. The C3 capacitor must have leads length of 18 mm with 8 mm....
As you can see in this FM IF MW radio receiver circuit schematic the LA1260 ic can be used in AM FM radio receiver electronic projects. LA1260 has integrated in the package many functions and features that are needed for radio receiver applications. high S/N....
This portable am fm radio circuit is designed using the LA1800 IC and some other external components. As you can see in this circuit diagram the LA1800 manufactured by Sanyo Semiconductors, require few additional components. Also the output signal is driven....
A very simple single sideband (SSB) suppressed carrier demodulator (product detector) circuit can be designed using the LM1596 balanced modulator-demodulators IC. The carrier signal is applied to the carrier input port with sufficient amplitude for switching....
A very simple FM transmitter circuit can be designed using MC2833 integrated circuit, designed for cordless telephone and FM communication equipment. It includes a microphone amplifier, voltage controlled oscillator and two auxiliary transistors. The final....
This MK484 AM radio circuit provides a complete solution including : RF amplifier, Detection and AGC circuit (automatic gain control ), which requires only a few external components to give a high quality AM Tuner. The circuit has an input impedance of....
Oscillating circuit (coil) are made on a ferrite bar. If you wish to listen long waves winding "1-2" has 135 turns and 3-4 has 20 turns. If you wish to receive medium wave winding "1-2" has 75 turns, and "3-4" has 7 turns (wire used must be CuEm 0. 15mm). In....
This electronic rf detector electronic project is designed using common transistors and other few common electronic parts. This rf detector responds to RF signals bellow the standard broadcast band to well over 500 MHz and provides an visual, and audible....
All coils are designed using an inch diameter pvc pipe using 20 gauge insulated hookup wire, L1 require 6 turns and L2 require 14 turns. You can add turns to or subtract turns from L(or change C2) to receive other frequencies. Q2 and Q3 form an amplifier,....
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....
TDA7088 contains a frequency-locked-loop (FLL) system with an Intermediate Frequency (IF) of about 70 kHz. For supplying this circuit we can use an 3 volts battery cell or a regulated power supply...
The pilot detector output is designed as an open collector output, therefore an external pull up resistor is needed. To force the decoder to "MONO" Pin 19 has to be clamped to a voltage below 0. 8V...
The IC is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing. A special function is implemented for the demodulation of FM radio signals....
Using TEA5551T monolithic integrated radio circuit can be designed a AM radio receiver circuit which is designed for use as a portable radio receiver with headphones. The TEA5551T radio receiver circuit contains all is needed for a AM radio receiver circuit....
Using the UPC1651 FM monolithic circuit can be designed a very simple low cost FM transmitter electronic project. This UPC1651 FM transmitter circuit is specially designed as a wide band amplifier covering the HF band trough UHF band. Audio signal from the....
This infrared detector circuit is designed using the PID20 integrated circuit manufactured by Siemens (which converts thermal radiation into electrical impulses), an operational amplifier and a few electronic components. The output signal at pin 3 is....
This metal detector electronic project schematic circuit is designed using a simple 555 timer integrated circuit. As you can see in the schematic circuit, this metal detector electronic project requires few external electronic parts...
A very simple proximity detector electronic project can be designed using this schematic circuit. This proximity detector electronic project use a tone decoder integrated circuit ( NE567 ) that will provides a signal with a frequency about 100Khz. When an....
A very simple high power alarm driver electronic project can be designed using this circuit diagram. This high power alarm driver electronic project is based on low power SCR which trigger a high power SCR. When a switch is opening (S2, S3, S4) or closing....
Using the RE46C140 circuit can be designed a very simple smoke detector alarm using few external electronic components. The RE46C140 IC is a low power CMOS photoelectric type smoke detector IC that will provide all the required features for a photoelectric....
This touch sensor switch can is designed using inverters (N1, N2)and some common electronic components. In standby state at the entrances of N1 there is a signal produced by oscillator N3/N4. At the touch sensor hand capacity forms a bridge to the ground for....
This heat detector alarm electronic project is designed using the UM3561 sound generator circuit and some other common electronic parts. This heat detector circuit project uses a complementary pair comprising npn and pnp transistor to detect heat. When the....
A very simple low cost water level indicator circuit can be designed using this schematic circuit. This water level indicator is based on a simple CMOS IC CD4066 and indicates the amount of water present in the overhead tank and also gives an alarm when the....
Using this schematic electronic project can be designed a very simple water level indicator electronic circuit that uses a 7-segment display to indicate the water level (low, half and full)in the tank. This water level indicator electronic circuit shows the....
The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achievement with adjustable accretion are additionally provided...
