Simple Radio Circuit using Op Amp

admin October 17, 2018 11 Comments
Simple Radio Circuit Op-amp is the short form for Operation Amplifier. It is a device used to amplify voltage, and is very popular due to its high gain amplification. It can often amplify voltage to hundred times of what...
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Simple Amplifier Circuit

admin April 27, 2011 13 Comments
19 Watts Simple Amplifier Circuit Description This is a 19 watt simple amplifier circuit diagram using IC LA4440 from Sanyo.It uses very less components other than the IC LA4440.A very high quality circuit with respect to its cost and...
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InfraRed (IR) Sensor/Detector

jacky November 22, 2011 11 Comments
InfraRed (IR) Sensor/Detector Circuit Description. The circuit shows that the output of IC1 555 IC,which is designed for a duty cycle of 0.8mSec,with a frequency of 120Hz and 300 mA peak current, is used to drive the infra red...
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Simple Lamp Dimmer/ Fan Regulator

admin November 22, 2011 33 Comments
A Lamp Dimmer/Fan Regulator Circuit We have modified this circuit: – Take a look – Modified Lamp Dimmer Description . This is the circuit diagram of the simplest lamp dimmer or fan regulator.The circuit is based on the principle...
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Fridge Door Alarm

jacky November 22, 2011 10 Comments
Fridge Door Alarm Circuit Description. This is a fridge door alarm circuit, which produces an audible alarm when fridge is left open for a preset time. This versatile alarm is based  on two 555 timer IC’s. Both ICs are...
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Automatic LED Emergency Light

admin January 23, 2018 322 Comments
LED Emergency Light We have developed three circuits under Automatic LED Emergency Light. Two of them are designed by Mr. Seetharaman, a very valuable and important contributor of this website. We have listed the circuits here for your ease...
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Audio Sound Level Meter

jacky October 16, 2018 4 Comments
Sound Level Meter Circuit What is a sound level meter? A sound level meter is a handy equipment used to display sound levels. There are wide ranges of these devices; some show a digital numerical output of how many decibels...
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