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6 Simple Capacitance Meter Circuits Explained – Using IC 555 and IC 74121

Last Updated on November 13, 2023 by Swagatam 59 Comments

FrequencyMeter

In this post I will talk about 6 easy yet accurate capacitance meter circuits using the ubiquitous IC 555 and many other easily available ICs. How Capacitors Work Capacitors are one of the main electronic components which come under the passive component family. These are extensively used in electronic circuits and virtually no circuit can […]

Filed Under: Meters and Testers Tagged With: 555, Capacitance, Circuits, Explained, Meter, Simple

Making a Time Machine – Concept Explored

Last Updated on November 13, 2023 by Swagatam 3 Comments

Wondering how to travel in time? Learn it with great Sir Stephen Hawking, according to whom time warp may be an option but seems pretty impractical, the reason being the feed back loop which will just oppose the feasibility of making a time machine and the concept using this theory. Are you intrigued by the […]

Filed Under: Electronics Theory Tagged With: Concept, Explored, Machine, Making, Time

Mobile Phone Controlled Door Lock Circuit

Last Updated on January 8, 2024 by Swagatam 49 Comments

Controlling your door lock through your personal cell phone was never this easy. Learn how to build a simple electronic circuit that will help in converting your ordinary door lock into a high security door lock which can be now controlled through your own cell phone. Your ordinary door lock can be now very easily […]

Filed Under: Security and Alarm Tagged With: Controlled, Door, Lock, Mobile, Phone

Build a Homemade GSM Car Security System

Last Updated on November 9, 2023 by Swagatam 54 Comments

1 13

This super simple circuit design of a gsm car security system really works.Don’t believe it? Find out and learn the simple method of constructing it. How would you feel if you had the power of controlling your vehicle through your own cell phone, from any part of the world? Learn more how to build a […]

Filed Under: Automobile Electronics Tagged With: Build, GSM, Homemade, Security, System

A Homemade Fence Charger, Energizer Circuit

Last Updated on November 7, 2023 by Swagatam 156 Comments

The electric fence charger circuit presented here is basically a high voltage pulse generator. The super high voltage is derived from a commonly used automobile ignition coil. An astable multivibrator is used to generate the required frequency to drive the ignition coil. Another astable is used to control the pulses supplied to the fence. Protecting […]

Filed Under: Security and Alarm Tagged With: Charger, Energizer, Fence, Homemade

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