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8051 / 8052
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555 Timer Circuits
Remote Control Toy
H Bridge Circuit
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
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Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
The schematic for a monostable multivibrator is shown below. Like the astable multivibrator, one transistor conducts and the other cuts off when the circuit is energized. Recall that when the astable multivibrator was first energized, it was impossible to predict which transistor would initially go to cutoff because of circuit symmetry. The one-sh
Stereo amplifier circuit with LM1877
The lm1877 is an amplifier stereo developed to supply 2W / channel in loads of 8 ohms It was drawn to work with the minimum of external components. Turning him/it a circuit integrated flexible that it can be used in several applications of audio amplification, as amplifier stereo for record player, amplifier for radios am fm stereo. The lm1877...
Circuit of power audio amplifier with circuit integrated tda2030 car amplifier 14 watts rms
TDA2030 is a circuit integrated monolithic in Pentawat ® package, to be used as class audio amplifier AB. Typically he supplies up to 14 Watts of potency (d=0. 5%) @ 14V/4 ©. The guaranteed potency is 12W in a load of 4 © and 8 watts in a load of 8 ©. Integrated him/it bill with circuits of component protection. Audio amplifier with having...
Circuit power audio amplifier TDA2040 20 watts integrate circuit with pcb and power supply circuit
The TDA2040 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB amplifier. Typically it provides 22W output power (d = 0. 5%) at Vs = 32V/4. The TDA2040 provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates a patented short circuit protection
Circuit audio power amplifier circuit lm386 with pcb for 800 mW
audio power amplifier subwoofer ne5532 tda2030
Circuit power audio amplifier potency lm4782 overture three channel
LM4782 uses the system of protection of National Self Peak Instantaneous Temperature ( Ke) (SPiKeTM). Spike protects the exit of the lm4782 of on tension on load, short of the source for gnd, temperature protection and picks instantaneous of temperature. Each amplifier of the lm4782 has a mute circuit and internal stand-by, that can be...
Circuit power audio amplifier stereo with LM1875 and preamp for NE5532 2 x 20 Watts
The LM1875 delivers 20 watts into a 4 or 8 load on ±25V supplies. Using an 8 load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown. The LM1875 design takes advanta
Circuit Audio Stereo power amplifier LM4755 11W with Mute
The internal mute circuit and pre-set gain resistors provide for a very economical design solution. Output power specifications at both 20V and 24V supplies and low external component count offer high value to consumer electronic manufacturers for stereo TV and compact s
Circuit of power audio amplifier lm1875 20W
The lm1875 is a monolithic audio amplifier that offers a very low distortion and a performance of high quality for projects of audio amplifiers. The lm1875 supplies 20 watts in loads of 4 Ohms or 8 Ohms.
Circuit of RIIA phono pre-amplifier op-27
He only contributes with 3. 2nV/ HZ of noise tension and 0. 45pA/ HZ of current noise to the circuit. To minimize the noise of other sources, R3 it is configured for 100 ©. That generates tension of noise additional of only 1. 3nV/ HZ. R1, R2, c1, and c @ form a net RIAA of a lot of precision with standard components supplying the necessary...
lm1875 stereo power amplifier circuit schematic
Circuit Power audio Amplifier with TDA2030 2.1 Chanell 3 x 18 Watts Subwoofer Complete With PCB suggestion and power supply
This circuit is a complete application is 2. 1 amp, two satellite speakers for TDA and one for the subwoofer, making the 2. 1 system, widely used in commercial applications as an amplifier for computers, which may give an increased in its audio system with a stereo amplifier + bass amplifier (subwoofer). The power supply is of symmetric type, using
Operational Amplifier Video Tutorial and super microphone circuit with LM324
Afroman goes over the basics of how to use an operational amplifier to amplify tiny voltages, and builds a circuit to listen to very faint sounds with a microphone. For more information about amplifiers, Google inverting amplifier non-inverting amplifier instrumentation amplifier class A amplifier class B amplifier class AB amplif
Power rf amplifier 802. 11g maxim max2247
Circuit for power linear RF amplifier with BLY90
It is to be used as amplifier of potency of RF in the high strip of of the power source that should be capable to supply a tension of 13 volts with a current of 10 amperes. it demands right care in the assembly of the source. Terrified armored transformer, and three shocks of RF to filter the components of high frequency. XRF1 and XRF2 are 30...
tda2xxx power supply schematic
100 watts Audio Amplifier Mono With DMOS IC MOSFET TDA7293
Circuit 22W Stereo Amplifier Using TDA1554
Here is the 22 watt stereo audio power amplifier circuit diagram based on TDA1554 and integrated circuit from NXP semiconductors (formerly PHILIPS semiconductors). It is very simple and useful circuit for amplify the stereo signals. The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to
stereo audio amplifier lm386 schematic
Stereo power audio amplifier circuit tda2009 10+10 watts
preamplifier stereo tda1524a bass treble schematic
Wideband DTV UHF Antenna TV Amplifier Circuit using transistor 2sc3358
This HD TV UHF wideband amplifier (Ultra High Frequency amplifier ) has a total gain of 10 to 15 dB in the 400 850 MHz domain frequency so it can be used where the tv signal is weak. For this UHF antenna tv amplifier to work correctly you need to cut the components pins as short as possible. C1, C2, C6, C7 are SMD type ( surface mounted ). Thi
Circuit of graphic equalizer of 7 bands using it integrated la3607 of Sanyo
The circuit integrated la3607 allows to just set up a graphic equalizer of 7 bands for a channel adding some capacitors and variable resistors to the circuit. The cut frequency can be adjusted using variable resistors. It possesses high stability for loads capacitive. To be necessary of more channels is to set up how many units they are only neces
fm stereo transmitter ba1404 diagram
Circuit FM transmitter for MP3 and MP4 Player 2n2218 and 741 opamp
Evolution FM transmitter with 2n2218 with audio amplification step using LM741 op amp with audio input for MP3, MP4, mobile, computer and other audio sources, beyond the traditional electret microphone. With great sensitivity to the input signal. Using fewer components and easy assembly makes it ideal for those who want even without much experienc
Circuit audio pre-amplifier integrated circuit LM358 dual op amp
The LM358 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the pow
circuit to test servo motor (pole rotor) of parabolic antenna
That circuit is to test the motor servant of the parabolic antenna it is working perfectly, although a system with lnbf is much more appropriate, a lot of people they still use systems using lnb and servo motor. Then the idea of that circuit is to help to the technician reparation of parabolic antennas when doing test of operation of the servo mot
Dimmer circuit Triac TIC 226
fake car alarm 555 led flash schematic
Module thermometer temperature meter for digital multimeter using the ic lm35
Converser of temperature tension. To be used with a digital multimeter with reach from -40 °C to 110 °C. With checker of the state of it laughed and a without any adjustment, thanks to LM35! The ice is founded the 0 °C and the point of ebullition of the water, at sea level it is of 100 °C. Using those two point of reference is gauged the temperatu
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial