Top Circuits Page 198
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This be simple Adjustable voltage regulator power supply circuit, at use integrated number circuit TL431. By from the circuit can fine volt 3V - 30V, depend on....
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This circuit is a circuit that sounds a siren-like sound of ambulance sirens. This circuit is different to an ambulance siren circuit generally, is to use....
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When entering the power supply 9-volt circuit IC1 number LM386 amplifier IC size is 300-800 mW, Depending on the power supply circuit with, This is from 4-15 volts. Once entered into the input pin 3, The non inverting pin to amplifier non-return phase. C1....
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Amplifier ic 18W using HA13118 IC amplifier 18 watt circuit is an IC number HA13118 Hitachi Hard. That the IC will be integrated amplifiers, class AB. And....
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When we said to Noise signal in an audio system. everyone not likes it, wants to get rid of it all. I also not like them too. However, we can use it to get rid of it. I use transistors. Because it is easy to find. And low noise. Friends try to see the....
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This is an automatic light dimmer circuit. You do not need to dim the lights by yourself. It is so very convenient, because we use the LDR to detect external....
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This is a background music (SCA) decoder circuit from the input demodulated (multiplex) FM signal. We use NE565 (Phase Locked Loop IC) to be base of this....
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The our best 12 Volt battery charger circuit, this is a charger circuit automatic system, then when the battery voltage is lower than specified, this circuit....
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The buffer op-amp circuit or Used for coupling two circuits together or the Unity Gain Follower Voltage Follower used to transfer or copy a voltage from a first....
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For Check battery in car, It use IC CA3140 and Transistor, Easy circuit. For electricity pressure of automobile battery is important many factor. If be high....
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This subwoofer filter set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power. But if you....
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The digital time clock is circuit that electronic amateurs are most interested. And The clock ICs that most popular are LM8361, MM5387, Unfortunately these ICs....
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Those who are looking for a unique gift of sorts for Christmas and New Year. Certification this project create a predilection certainly for the....
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The microcontroller IC is a device that looks like a common IC. But inside it, the virtual a miniature computer. This device can be used instead of transistors....
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This is a siren sound generator circuit. Which is less expensive and can create simple. The IC1 is using CD4011 (Digital Nand Gate) and the IC2 is....
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The circuit is a good battery. It is Control Volttage regulator Output 12V 1.5A , Input Voltage battery 5V-13V Only. Use IC- MC34063 so easy circuit,....
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When feed power supply reach the circuit and feed input signal come in. The sound signal change C1 and R1 for signal coupling and eradicate noise oscillator go out. From that time go to reach input pin 3 non inverting of IC1. Which be op-amp IC boost up....
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This is Circuit DC to DC Converter. For input DC12V-24V 4A to Output 24V-48V 2A (inputX2) Use easy circuit simple part IC Digital Cmos : 40106 and Mosfet....
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This circuit gives sound handful that modifies interestedly, occurrence sound rate cricket Fixed. By R3 should experience change the value C1,R5 and C2....
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I like the circuit, because it is good and enjoy. It just the signal status ""1"" and ""0"" only. And frequency generator is....
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You cannot use a multimeter to check a crystal. You should have a this circuit, because it can check a crystal 100Khz to 900Mhz, easily to make and cheap.The....
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This is speed motor controller circuit of 12V DC motor. You can adjust the speed of rotation of the spindle motor from 5-60 cycles per minute. The work of....
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DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at 2Amp. I sees part already modify transistor TIP31 and part come to can be usable well. By this circuit can give voltage 9 Volt at 1 Amp, be stable or can fine can decorate 6V....
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I used a main part and 2N3055 Transister and IC TL072 for pulse oscillator generator. The output have voltage +50V and -50V at 2A to 3A. You must is used this....
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This dice digital circuit would be a favorite of everyone, by using it to display the numbers. When I turn off the spin switch, it will be converted to a binary input with a diode matrix D1-D9 (1N4148 or number 1N914) and then changed to a 7 segment display....
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If you want to send video and audio signals are spread to multiple televisions simultaneously. You may use a Video amplifier splitter by transistor....
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From this LM386 circuits we modify is this simple Doophone intercom. you can build them. read below. In this doorphone circuit,an 8 ohm speaker is used both as....
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It use the three transistor (2SC945, or 2C1815 or 2SC828) is main Which typical transistor amplifier with a low noise this circuit, too. There are about 200-300 times the gain. The frequency response is 50Hz to 100KHz. I have an old microphone, I want to....
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Friends that seek 5V 10A power supply circuit small-sized and build easy. I begs for to advise this circuit. It is 10A switching regulator by use IC L4970A. Then build easy as an example integrated readymade circuit. Important point be power supply input....
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This circuit will allow the brake light was flashing. The default behavior. When the power supply to the circuit, Or tap the brake it. The IC timer IC2 drive current to transistor Q2 and producing oscillator output, pulse signal output at pin 3 to input pin....
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The circuit tests a flyback transformer of the televisions that the result is a simple, easy and cheap to build. One of my friends is TV repairman colors -....
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This the fm wireless transmitter circuit, the truth is one kind microphone that developed to be used without a cable from the microphone to the amplifier. Makes....
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Operation of the circuit uses a UM3516 IC IC1 number ready to create a sound all four sound at pin 7, 8 of IC1 to the R1, VR1 to take to control the frequency....
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The power amplifier circuit using MOSFET has been very popular, because the sound is very aggressive, as compared to transistors and ICs. It can be low-frequency and high-frequency response as well, it is highly durable. Usually, if compared with the same....
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This is asimple siren sound that high power output and very noisy. ICs, Digital ICs are easy to use number CD4046 Inverter circuit and four transistor power increase current out to horn speaker 20 watt 4ohm 8ohm. Operation of the circuit when the circuit is....
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The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily through the video in terminals. and connects to the video signal modulated to To send a broadcast RF signal....
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We can bring the inverter CMOS digital IC is CD4049 Hex Inverting Buffer IC, to design the Square wave oscillator generator....
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ICs has been used in many audio amplifiers, especially small circuit. It is convenient to use transistors. But when you need to use transistors, it has several advantages, such as saving you can take old equipment come to made small circuits easier than the....
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This key code switch circuit is a type of electronic circuit that is created to replace conventional normal key switch. Without inserts a keys. But you can....
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The work of the circuit this origin frequency sound circuit model astable multi vibrator. When build the circuit suits power supply the circuit will still....
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If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017_decade counter and....
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The V.U. meter that works with the integrated amplifier circuit.The signal will sound, the audio amplifier circuit into VU meter circuit.And will show the level....
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A VU Meter is used to display the power level of the audio, it also is beautiful. When you go to the electronic equipment store to buy the VU meter kit, with the assembly various parts on their own or the style ready to use. Most of us are using the....
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This is a false capture circuit or Lie detector circuit. The basic principle of the resistance of human skin. While dry skin is a resistance of about 1 Mega ohm....
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When change the value of R2 Intensity of Lamp change to this circuit shows the usability of Mosfet be Variable Resistor. By Q1 use N-Channel Power Mosfet. but what is the number all right follow the size of Load or Lamp there. When change the value of R2....
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If you are looking a ICs for a DC to DC converter job. I highly recommend of IC-LM1577/LM2577 supply all of the power and control functions for step-up....
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This is the DC switching regultor Voltage 5V at current 3A. It is make for digital circuit. The important part of the circuit is LM2673, it is 3A Step-Down....
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Normally begin to learn about electronics power supply from the battery, for example, 9 volts, 1.5 volts, 6 volts etc. But there are disadvantage that when....
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With the component values shown the circuit is designed to have and output voltage range of approximately 1.25 to 13.5 Volts when measured at the output of the....
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This phone is loud ringing tone circuit for generating the electricity bell in the old telephone. This circuit is relatively loud. so can use to replacement the same ringer or the original telephone may be lost. We do not need a new phone. The detect ringing....
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If you have electronics old equipment, keep many long ago year, unknow build Electronic Project good. I begs for to advise pre tone control circuit this. By....
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This be the circuit filters 10KHz low size frequencies s use IC op-amp the highly popular number uA741. By this circuit convenients for to apply to input and output of the circuit changes analog signal be digital or the circuit changes digital signal be....
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This simple low voltage tester circuit can be used to monitor battery and other voltage sources of current for problems, by LED display and alarm sound. Which....
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I need an AC line 220V light display or main voltage monitor. Because the home ‘s electric of his brother a very often problem. Below a figure is the 230V AC v....
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Logic probe is useful tool to measure, in a check digital circuits. As a meter, which is used to measure power in electrical circuits. Logic probe was used for....
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Door Buzzer by use, IC 555. Perform sound electric bell origin. When press S1 as a result have a voice fair loud. This circuit almost must not do anything. Because divisible Amen! should use 25-80ohm size loudspeakers. will make good sound use force against....
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This is Micro inverter or The inverter very small-sized, perform modify from the energy battery the small-sized, have the value voltage about 220V AC Volt 50HZ. By the circuit composes 2 transistors performs pulse oscillator generator or Square wave....
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If you are looking for a micro mixer circuit that create a simple, affordable, small and compact, and be usable versatile, must be this circuit. We can use to mix up to four input channels such as the microphone signal, FM Tuner, AUX and Other signals, As....
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This be mini size power amplifier 2 watt OTL that use IC LM380. Be base readymade circuit for side sound work and the communication. Which use outside equipment adds least. The C6 can choose get many the value since 47uF to at 470uF which, have a voice good....
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This is small inverter on 30 watts, It converts DC voltage from 12V battery to AC 220V-230V at 50Hz which is electricity same use in your house. It can provide 2-3 Air pump or other. You will like them because so cheap and easy to builds. Then, what is it....
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If you are looking for a mixer with a microphone, and can easily make your own.I highly recommend this circuit.It is a....
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This is Circuit MOSQUITO REPELLANT. By High Frequency Sound. Use a electronics part ,easy to find and low cost. To See Circuit, have IC 555, 4017,....
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The siren circuit is what importance in various alarm. For example : the emergency alert, burglar alarm circuits, Fire alarm circuits, Timer, sensor controls, etc. If we have not these circuit, We will not able to recognize the functionality of the circuit,....
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The Multi function frequency meter is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures....
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The schematic of the power supply is shown below. It runs off standard household power of 120VAC 50/60Hz, and the output is adjustable up to 25kV or more. For....
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Tools that features equivalent of a professional, easy to use, cheaper, and more importantly, safe for use. For checking to find AC 220 Volt or 120V or call....
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That be On After Delay Circuit. I uses mosfet in the circuit for delay easy more than the transistor. By have the work of the circuit be when press , S1 ,....
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An oscillator circuit of this nature. Often used as a clock circuit. This circuit uses a million crystal frequency control with stability. And....
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The Passive tone control circuit be the circuit fines the bass that has no the expansion but will give kind equipment R and C. It perform filter frequency then the circuit that build easy and must not use power supply. By can concede the porch with part....
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A motion detection alarm circuit using a PIR.SENSOR motion detection, if the move is a positive light from the PIR sensor, triggered by a delay circuit, Q1 and....
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This circuit is the sound generator super siren, for use be alarm signal get by live frequency generator circuit that use, op-amp circuit. The principle works to are while still no press switch S1 will still have no the loud sound comes out from a....
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Many a person will might excited with siren sound the all that ever hear. Because we will hear when there is an accident emergency event. But ever suspect that....
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Main Power Amplifier OCL 100watt by MJ802, MJ4502. May pleasing of friends at like firm bass and Treble be bold. Because it is Amplifier OCL model Class AB. And it has electric tall power about 100Watt at 8ohm size loudspeakers. Then can use in the work....
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This be Pre Mic circuit or Microphone preamplifier circuit model 2 CH. By this circuit uses integrated number circuit NE5532 or LF353. It perform enlarge sound signal from Dynamic Micro phone give the power goes up for subsequently submit to go to still....
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To check the peak voltage of the signal to change at any time. Measuring with a multimeter will not do it. We recommend this circuit. It may help you. In this circuit is used with a positive signal input, when has negative feedback only. And the inverting....
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My Friend need to like a Pulse Generator Oscillator circuit that stable frequency at 32.768KHz,for digital cmos binary counter, so he tell to me even low....
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RS-232 system connection faster and easier, But distance is not far. so to change to use the system RS-485 with this RS-232 to RS-485 converter projects. It....
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This be Mini Power Inverter , by use SCR be main part electronics , perform Oscillator Generator 400Hz give Output 300V by use Voltage Input 12V Current....
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This circuit is a simple mixer circuit. It can mix two signal channels and one channel is output. Using a codec circuit, Convert stereo audio to mono audio time. -In circuit a FET number 2N3819 is main, it is better than a common transistors that a high....
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This circuit Simple DC to DC Converter For Digital Circuit. It use Volt supply 5V Only, To Output Step up Volt 10V-12V DC max. I use IC 555 ( hot ic Timer) for....
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This be Simple high pass Filter perform filter especial tall frequency can change only. By use IC 741 , be the integrated circuit op-amp very the circuit....
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This circuit be Simple Metronome circuit model to be simple. It use the transistor be important equipment by very the circuit is the character Astable Multi vibrator. For produce something the sound beep. By can fine VR1 for get sound tone Generator follow....
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I got this from a dosing pump control circuit. we use cool IC is no. lm317 circuit, It can uses with power supply source 24VDC and adjust voltage output 1.25V....
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This be simple Preamp circuit. It can take sound general signal AUX and a signal from Microphone. For enlarge sound signal at the beginning. By use op-amp IC....
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When you want to enlarge sound signal from all source before costume amplify. Usual use Pre Amplifier or Pre Amp. Today I begs for to suggest again the one circuit. That interesting because of use Transistor just one ( the number replaces many the number....
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This is a simple pulse generator circuit or standard astable oscillator circuit for IC 555 timer,NE555N IC. Use for....
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This again the one circuit that can is dc regulator the many voltage get simplely. Or Simple step down dc converter multi voltage. By have R1 be formed fix the....
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This be the circuit sets the time to model is simple,at can fix the time had long ago and have tall good accuracy. By use pillar equipment be IC CA3140 for....
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Expensive stereo is general often have VU meter come to and for help show max power the stereo not too much. For radio tape general plaything has will no VU Meter. I then think to seek Multi meter use can replace. By use Range 100uA and electronics equipment....
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This is the Transistor tester into the Circuit or PCB. When your project do not works, the tester electronic parts or....
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In the Sine wave oscillator circuit often to be use the thermistor and Incandescent lamp, for upset the output of circuit has fixed value, the resistance of....
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This circuit is FM radio receiver that very small size and works well, although the sensitivity is poor. The principle of this circuit is to use the generator....
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Today I have collected a small amplifier IC circuit to you. Most of the old series. and It is a simple circuit OTL series,....
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This circuit is DC Dimmer Circuit. By use IC LM555 be model Astable Multi vibrator. It is can change translate Duty Cycle with fining VR1 and VR2 be....
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The circuit decreases the size voltage or Stepdown Voltage converter circuit be dc regulated circuit model switching converter. The that make voltage output....
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Using the LM1458 IC number to expand the difference of the input signal left (L). It came out as surround sound sure enough. When raising the power and enter the left and right input circuit. The signal on the left (L) to signal coupling through C2 and R1 to....
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The stereo tone control circuit with IC, be the circuit diagram that use just IC number TDA1524A. It be pillar heart in the work which, be IC the integrated....
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The super dimmer it is certainly better than the normal dimmer you are using now. It would be better, however, to try to prove it. Let`s see how it works....
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Super boost bass circuit this be low pass filter circuit model,which will low pass filter. By give bass audio that firm then convenient for a person who like....
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This circuit prevents surges. From the opening is switched off or power failure. The damage to electrical appliances. The circuit will switch to use a short....
This be simple Adjustable voltage regulator power supply circuit, at use integrated number circuit TL431. By from the circuit can fine volt 3V - 30V, depend on....
This circuit is a circuit that sounds a siren-like sound of ambulance sirens. This circuit is different to an ambulance siren circuit generally, is to use....
When entering the power supply 9-volt circuit IC1 number LM386 amplifier IC size is 300-800 mW, Depending on the power supply circuit with, This is from 4-15 volts. Once entered into the input pin 3, The non inverting pin to amplifier non-return phase. C1....
Amplifier ic 18W using HA13118 IC amplifier 18 watt circuit is an IC number HA13118 Hitachi Hard. That the IC will be integrated amplifiers, class AB. And....
When we said to Noise signal in an audio system. everyone not likes it, wants to get rid of it all. I also not like them too. However, we can use it to get rid of it. I use transistors. Because it is easy to find. And low noise. Friends try to see the....
This is an automatic light dimmer circuit. You do not need to dim the lights by yourself. It is so very convenient, because we use the LDR to detect external....
This is a background music (SCA) decoder circuit from the input demodulated (multiplex) FM signal. We use NE565 (Phase Locked Loop IC) to be base of this....
The our best 12 Volt battery charger circuit, this is a charger circuit automatic system, then when the battery voltage is lower than specified, this circuit....
The buffer op-amp circuit or Used for coupling two circuits together or the Unity Gain Follower Voltage Follower used to transfer or copy a voltage from a first....
For Check battery in car, It use IC CA3140 and Transistor, Easy circuit. For electricity pressure of automobile battery is important many factor. If be high....
This subwoofer filter set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power. But if you....
The digital time clock is circuit that electronic amateurs are most interested. And The clock ICs that most popular are LM8361, MM5387, Unfortunately these ICs....
Those who are looking for a unique gift of sorts for Christmas and New Year. Certification this project create a predilection certainly for the....
The microcontroller IC is a device that looks like a common IC. But inside it, the virtual a miniature computer. This device can be used instead of transistors....
This is a siren sound generator circuit. Which is less expensive and can create simple. The IC1 is using CD4011 (Digital Nand Gate) and the IC2 is....
The circuit is a good battery. It is Control Volttage regulator Output 12V 1.5A , Input Voltage battery 5V-13V Only. Use IC- MC34063 so easy circuit,....
When feed power supply reach the circuit and feed input signal come in. The sound signal change C1 and R1 for signal coupling and eradicate noise oscillator go out. From that time go to reach input pin 3 non inverting of IC1. Which be op-amp IC boost up....
This is Circuit DC to DC Converter. For input DC12V-24V 4A to Output 24V-48V 2A (inputX2) Use easy circuit simple part IC Digital Cmos : 40106 and Mosfet....
This circuit gives sound handful that modifies interestedly, occurrence sound rate cricket Fixed. By R3 should experience change the value C1,R5 and C2....
I like the circuit, because it is good and enjoy. It just the signal status ""1"" and ""0"" only. And frequency generator is....
You cannot use a multimeter to check a crystal. You should have a this circuit, because it can check a crystal 100Khz to 900Mhz, easily to make and cheap.The....
This is speed motor controller circuit of 12V DC motor. You can adjust the speed of rotation of the spindle motor from 5-60 cycles per minute. The work of....
DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at 2Amp. I sees part already modify transistor TIP31 and part come to can be usable well. By this circuit can give voltage 9 Volt at 1 Amp, be stable or can fine can decorate 6V....
I used a main part and 2N3055 Transister and IC TL072 for pulse oscillator generator. The output have voltage +50V and -50V at 2A to 3A. You must is used this....
This dice digital circuit would be a favorite of everyone, by using it to display the numbers. When I turn off the spin switch, it will be converted to a binary input with a diode matrix D1-D9 (1N4148 or number 1N914) and then changed to a 7 segment display....
If you want to send video and audio signals are spread to multiple televisions simultaneously. You may use a Video amplifier splitter by transistor....
From this LM386 circuits we modify is this simple Doophone intercom. you can build them. read below. In this doorphone circuit,an 8 ohm speaker is used both as....
It use the three transistor (2SC945, or 2C1815 or 2SC828) is main Which typical transistor amplifier with a low noise this circuit, too. There are about 200-300 times the gain. The frequency response is 50Hz to 100KHz. I have an old microphone, I want to....
Friends that seek 5V 10A power supply circuit small-sized and build easy. I begs for to advise this circuit. It is 10A switching regulator by use IC L4970A. Then build easy as an example integrated readymade circuit. Important point be power supply input....
This circuit will allow the brake light was flashing. The default behavior. When the power supply to the circuit, Or tap the brake it. The IC timer IC2 drive current to transistor Q2 and producing oscillator output, pulse signal output at pin 3 to input pin....
The circuit tests a flyback transformer of the televisions that the result is a simple, easy and cheap to build. One of my friends is TV repairman colors -....
This the fm wireless transmitter circuit, the truth is one kind microphone that developed to be used without a cable from the microphone to the amplifier. Makes....
Operation of the circuit uses a UM3516 IC IC1 number ready to create a sound all four sound at pin 7, 8 of IC1 to the R1, VR1 to take to control the frequency....
The power amplifier circuit using MOSFET has been very popular, because the sound is very aggressive, as compared to transistors and ICs. It can be low-frequency and high-frequency response as well, it is highly durable. Usually, if compared with the same....
This is asimple siren sound that high power output and very noisy. ICs, Digital ICs are easy to use number CD4046 Inverter circuit and four transistor power increase current out to horn speaker 20 watt 4ohm 8ohm. Operation of the circuit when the circuit is....
The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily through the video in terminals. and connects to the video signal modulated to To send a broadcast RF signal....
We can bring the inverter CMOS digital IC is CD4049 Hex Inverting Buffer IC, to design the Square wave oscillator generator....
ICs has been used in many audio amplifiers, especially small circuit. It is convenient to use transistors. But when you need to use transistors, it has several advantages, such as saving you can take old equipment come to made small circuits easier than the....
This key code switch circuit is a type of electronic circuit that is created to replace conventional normal key switch. Without inserts a keys. But you can....
The work of the circuit this origin frequency sound circuit model astable multi vibrator. When build the circuit suits power supply the circuit will still....
If you want to build a 10 LED Chaser circuit we suggest this circuit first. It uses popular IC is a simple and affordable IC-4017_decade counter and....
The V.U. meter that works with the integrated amplifier circuit.The signal will sound, the audio amplifier circuit into VU meter circuit.And will show the level....
A VU Meter is used to display the power level of the audio, it also is beautiful. When you go to the electronic equipment store to buy the VU meter kit, with the assembly various parts on their own or the style ready to use. Most of us are using the....
This is a false capture circuit or Lie detector circuit. The basic principle of the resistance of human skin. While dry skin is a resistance of about 1 Mega ohm....
When change the value of R2 Intensity of Lamp change to this circuit shows the usability of Mosfet be Variable Resistor. By Q1 use N-Channel Power Mosfet. but what is the number all right follow the size of Load or Lamp there. When change the value of R2....
If you are looking a ICs for a DC to DC converter job. I highly recommend of IC-LM1577/LM2577 supply all of the power and control functions for step-up....
This is the DC switching regultor Voltage 5V at current 3A. It is make for digital circuit. The important part of the circuit is LM2673, it is 3A Step-Down....
Normally begin to learn about electronics power supply from the battery, for example, 9 volts, 1.5 volts, 6 volts etc. But there are disadvantage that when....
With the component values shown the circuit is designed to have and output voltage range of approximately 1.25 to 13.5 Volts when measured at the output of the....
This phone is loud ringing tone circuit for generating the electricity bell in the old telephone. This circuit is relatively loud. so can use to replacement the same ringer or the original telephone may be lost. We do not need a new phone. The detect ringing....
If you have electronics old equipment, keep many long ago year, unknow build Electronic Project good. I begs for to advise pre tone control circuit this. By....
This be the circuit filters 10KHz low size frequencies s use IC op-amp the highly popular number uA741. By this circuit convenients for to apply to input and output of the circuit changes analog signal be digital or the circuit changes digital signal be....
This simple low voltage tester circuit can be used to monitor battery and other voltage sources of current for problems, by LED display and alarm sound. Which....
I need an AC line 220V light display or main voltage monitor. Because the home ‘s electric of his brother a very often problem. Below a figure is the 230V AC v....
Logic probe is useful tool to measure, in a check digital circuits. As a meter, which is used to measure power in electrical circuits. Logic probe was used for....
Door Buzzer by use, IC 555. Perform sound electric bell origin. When press S1 as a result have a voice fair loud. This circuit almost must not do anything. Because divisible Amen! should use 25-80ohm size loudspeakers. will make good sound use force against....
This is Micro inverter or The inverter very small-sized, perform modify from the energy battery the small-sized, have the value voltage about 220V AC Volt 50HZ. By the circuit composes 2 transistors performs pulse oscillator generator or Square wave....
If you are looking for a micro mixer circuit that create a simple, affordable, small and compact, and be usable versatile, must be this circuit. We can use to mix up to four input channels such as the microphone signal, FM Tuner, AUX and Other signals, As....
This be mini size power amplifier 2 watt OTL that use IC LM380. Be base readymade circuit for side sound work and the communication. Which use outside equipment adds least. The C6 can choose get many the value since 47uF to at 470uF which, have a voice good....
This is small inverter on 30 watts, It converts DC voltage from 12V battery to AC 220V-230V at 50Hz which is electricity same use in your house. It can provide 2-3 Air pump or other. You will like them because so cheap and easy to builds. Then, what is it....
If you are looking for a mixer with a microphone, and can easily make your own.I highly recommend this circuit.It is a....
This is Circuit MOSQUITO REPELLANT. By High Frequency Sound. Use a electronics part ,easy to find and low cost. To See Circuit, have IC 555, 4017,....
The siren circuit is what importance in various alarm. For example : the emergency alert, burglar alarm circuits, Fire alarm circuits, Timer, sensor controls, etc. If we have not these circuit, We will not able to recognize the functionality of the circuit,....
The Multi function frequency meter is an instrument that can measurement many things in a single display with LED 7 segment 8 digit. The controls measures....
The schematic of the power supply is shown below. It runs off standard household power of 120VAC 50/60Hz, and the output is adjustable up to 25kV or more. For....
Tools that features equivalent of a professional, easy to use, cheaper, and more importantly, safe for use. For checking to find AC 220 Volt or 120V or call....
That be On After Delay Circuit. I uses mosfet in the circuit for delay easy more than the transistor. By have the work of the circuit be when press , S1 ,....
An oscillator circuit of this nature. Often used as a clock circuit. This circuit uses a million crystal frequency control with stability. And....
The Passive tone control circuit be the circuit fines the bass that has no the expansion but will give kind equipment R and C. It perform filter frequency then the circuit that build easy and must not use power supply. By can concede the porch with part....
A motion detection alarm circuit using a PIR.SENSOR motion detection, if the move is a positive light from the PIR sensor, triggered by a delay circuit, Q1 and....
This circuit is the sound generator super siren, for use be alarm signal get by live frequency generator circuit that use, op-amp circuit. The principle works to are while still no press switch S1 will still have no the loud sound comes out from a....
Many a person will might excited with siren sound the all that ever hear. Because we will hear when there is an accident emergency event. But ever suspect that....
Main Power Amplifier OCL 100watt by MJ802, MJ4502. May pleasing of friends at like firm bass and Treble be bold. Because it is Amplifier OCL model Class AB. And it has electric tall power about 100Watt at 8ohm size loudspeakers. Then can use in the work....%2B2%2BCH%2Bby%2BIC%2B%2BNE5532%2Bor%2BLF353.jpg "Pre MIC (microphone preamplifier) 2 CH by IC NE5532 or LF353")
This be Pre Mic circuit or Microphone preamplifier circuit model 2 CH. By this circuit uses integrated number circuit NE5532 or LF353. It perform enlarge sound signal from Dynamic Micro phone give the power goes up for subsequently submit to go to still....
To check the peak voltage of the signal to change at any time. Measuring with a multimeter will not do it. We recommend this circuit. It may help you. In this circuit is used with a positive signal input, when has negative feedback only. And the inverting....
My Friend need to like a Pulse Generator Oscillator circuit that stable frequency at 32.768KHz,for digital cmos binary counter, so he tell to me even low....
RS-232 system connection faster and easier, But distance is not far. so to change to use the system RS-485 with this RS-232 to RS-485 converter projects. It....
This be Mini Power Inverter , by use SCR be main part electronics , perform Oscillator Generator 400Hz give Output 300V by use Voltage Input 12V Current....
This circuit is a simple mixer circuit. It can mix two signal channels and one channel is output. Using a codec circuit, Convert stereo audio to mono audio time. -In circuit a FET number 2N3819 is main, it is better than a common transistors that a high....
This circuit Simple DC to DC Converter For Digital Circuit. It use Volt supply 5V Only, To Output Step up Volt 10V-12V DC max. I use IC 555 ( hot ic Timer) for....
This be Simple high pass Filter perform filter especial tall frequency can change only. By use IC 741 , be the integrated circuit op-amp very the circuit....
This circuit be Simple Metronome circuit model to be simple. It use the transistor be important equipment by very the circuit is the character Astable Multi vibrator. For produce something the sound beep. By can fine VR1 for get sound tone Generator follow....
I got this from a dosing pump control circuit. we use cool IC is no. lm317 circuit, It can uses with power supply source 24VDC and adjust voltage output 1.25V....
This be simple Preamp circuit. It can take sound general signal AUX and a signal from Microphone. For enlarge sound signal at the beginning. By use op-amp IC....
When you want to enlarge sound signal from all source before costume amplify. Usual use Pre Amplifier or Pre Amp. Today I begs for to suggest again the one circuit. That interesting because of use Transistor just one ( the number replaces many the number....
This is a simple pulse generator circuit or standard astable oscillator circuit for IC 555 timer,NE555N IC. Use for....
This again the one circuit that can is dc regulator the many voltage get simplely. Or Simple step down dc converter multi voltage. By have R1 be formed fix the....
This be the circuit sets the time to model is simple,at can fix the time had long ago and have tall good accuracy. By use pillar equipment be IC CA3140 for....
Expensive stereo is general often have VU meter come to and for help show max power the stereo not too much. For radio tape general plaything has will no VU Meter. I then think to seek Multi meter use can replace. By use Range 100uA and electronics equipment....
This is the Transistor tester into the Circuit or PCB. When your project do not works, the tester electronic parts or....
In the Sine wave oscillator circuit often to be use the thermistor and Incandescent lamp, for upset the output of circuit has fixed value, the resistance of....
This circuit is FM radio receiver that very small size and works well, although the sensitivity is poor. The principle of this circuit is to use the generator....
Today I have collected a small amplifier IC circuit to you. Most of the old series. and It is a simple circuit OTL series,....
This circuit is DC Dimmer Circuit. By use IC LM555 be model Astable Multi vibrator. It is can change translate Duty Cycle with fining VR1 and VR2 be....
The circuit decreases the size voltage or Stepdown Voltage converter circuit be dc regulated circuit model switching converter. The that make voltage output....
Using the LM1458 IC number to expand the difference of the input signal left (L). It came out as surround sound sure enough. When raising the power and enter the left and right input circuit. The signal on the left (L) to signal coupling through C2 and R1 to....
The stereo tone control circuit with IC, be the circuit diagram that use just IC number TDA1524A. It be pillar heart in the work which, be IC the integrated....
The super dimmer it is certainly better than the normal dimmer you are using now. It would be better, however, to try to prove it. Let`s see how it works....
Super boost bass circuit this be low pass filter circuit model,which will low pass filter. By give bass audio that firm then convenient for a person who like....
This circuit prevents surges. From the opening is switched off or power failure. The damage to electrical appliances. The circuit will switch to use a short....