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Newly Updated Circuit Projects:

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

Simple Analogue Weighing Scale Meter Circuit

Last Updated on January 8, 2024 by Swagatam 18 Comments

simple weighing scale machine

Learn a super simple procedure to make a weighing scale meter circuit useful for measuring smaller magnitudes of weight. The Concept The concept is very simple, a light beam is allowed to pass through a linearly colored ribbon and fall over an LDR. The color shade of the ribbon positioned in front of the light […]

Filed Under: Meters and Testers Tagged With: Analogue, Meter, Scale, Simple, Weighing

Make this Wireless Speaker Circuit

Last Updated on January 8, 2024 by Swagatam 36 Comments

Transmitter 2

In this article I have explained a very simple circuit of a wireless speaker system which can be used for playing hi quality music wirelessly from your TV set, DVD player, Ipod, cell phone or from any music system. The speaker thus can be placed in any corner of the house within a radial distance […]

Filed Under: Audio and Amplifier Projects Tagged With: Speaker, Wireless

Wireless Li-Ion Battery Charger Circuit

Last Updated on January 8, 2024 by Swagatam 61 Comments

Inductive charging 1

Charging batteries through inductive wireless charging is one of the applications that’s becoming very popular and getting appreciated by the uses. Here we’ll study how to make a wireless Li-Ion battery charger circuit using the same concept. Any electrical system which involves wire networks or cables can be very messy and cumbersome. Introduction Today the […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Wireless

Proximity Detector IC CS209A Pinouts – Datasheet Explained

Last Updated on January 8, 2024 by Swagatam 2 Comments

cs 1

In this post I have explained the main specifications and pinout functions of the IC CS209A along with other technical aspecst of the chip. Introduction The device CS209A is a bipolar monolithic IC specifically designed for metal detecting circuit applications. The IC fundamentally has a built-in oscillator stage, a couple of current regulator stages, a […]

Filed Under: Datasheets and Components Tagged With: CS209A, Datasheet, Detector, Explained, Pinouts, Proximity

Simple Water Level Indicator Circuits (with Images)

Last Updated on January 8, 2024 by Swagatam 99 Comments

IC 4049 pinout diagram

A water level indicator is an electronic circuit which indicates the various levels of water inside a tank. This happens when rising or dropping water levels come in contact with the respective water sensors arranged step wise inside the water tank at different depths. In this post I have explained 2 interesting ways to make […]

Filed Under: Indicator Circuits, Water Controller Tagged With: Circuits, Images, Indicator, Level, Simple, Water

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