Lead acid battery charger circuit

admin November 9, 2018 193 Comments
In this article, we teach you how to design a simple Lead Acid Battery Charger circuit using an op-amp IC and some associated components. The core of this circuit is IC LM 317 – which is basically an operational...
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Audio Distortion Meter

admin November 2, 2018 5 Comments
Audio Distortion Meter An audio distortion meter is used to measure distortions in, yes you guessed it right, audio. At certain frequencies the sound from most audio devices distorts, they become unclear. Of course, the frequencies and the level...
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Audio Wattmeter Circuit

admin November 2, 2018 10 Comments
Audio Watt Meter How do you measure the power output of an amplifier? using an Audio Wattmeter. the name Audio Watt Meter’ is a collective name for all devices that are used to measure the output of an amplifier,...
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Sensitive Intruder Alarm Circuit

admin November 2, 2018 74 Comments
Super light Sensitive Intruder Alarm Circuit Intruder alarms are popular devices used in high-security areas as well as civilian houses to detect and alarm the presence of any intruders. There are different kinds of intruder detection alarms, some detect...
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Direct Coupled Radio

admin October 30, 2018 3 Comments
In this project circuit, we’re building a Direct Coupled Radio Circuit using an inductor and 3 transistors mainly. This is a very basic, low cost, hobby purpose circuit – just for the learning purpose of “direct coupling” method. If...
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Liquid Level Switch

admin October 30, 2018 13 Comments
In this guide, we are designing a Liquid Level Switch using 3 transistors (BC107), some passive components, a diode and a couple of relays. This is basically a level sensing circuit designed using minimal components. If you’re looking for...
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DoorBell circuit using UM 66 IC

admin November 9, 2018 29 Comments
Doorbell Circuit Description Related Posts: Melody Generator using UM 66 Door Bell Circuit Using NE555   The main objective of the doorbell circuit is to convert electrical signals (input) into audio signals (output) with a single press of a...
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7 Segment Counter Circuit

admin November 8, 2018 67 Comments
Seven Segment Counter Display Circuit Description Here is the circuit diagram of a seven segment counter based on the counter IC CD 4033. This circuit can be used in conjunction with various circuits where a counter to display the...
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Voltmeter circuit using LED

admin November 7, 2018 20 Comments
Car Battery Voltmeter Circuit Description The main onjective of the car batter voltmeter circuit using LED is to work as a warning inducator using a voltmeter circuit to test the life of car batteries. A voltmeter, though can be...
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Metal Detector Circuit

jacky July 25, 2018 44 Comments
Metal Detector Circuit I always wanted to make a metal detector seeing how cool it was in all Hollywood, Bollywood movies. One thing I realised is; things aren’t as difficult as you think it is. After all, I found...
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