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Newly Updated Circuit Projects:

How to Build a Simple Egg Incubator Thermostat Circuit

Last Updated on July 26, 2026 by Swagatam 212 Comments

eggincubatorthermostatcircuit

An electronic incubator thermostat circuit shown in this article is not only simple to build but is also easy to set and acquire exact tripping points at various different set temperature levels. The setting may be completed through two discrete variable resistors. How Incubators Work An Incubator is a system where bird/reptile eggs are hatched […]

Filed Under: Temperature Controllers Tagged With: Build, Incubator, Simple, Thermostat

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

2-Stage Mains AC Voltage Stabilizer Circuit

Last Updated on January 2, 2024 by Swagatam 33 Comments

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In this article I have explained how to make a 2 relay or two stage mains AC voltage stabilizer circuit for controlling and regulating 220V or 120V mains voltages through a simple circuit. Introduction In this power stabilizer circuit, one relay is wired to select the high or the low tap from the stabilizer transformer […]

Filed Under: Voltage Control and Protection Tagged With: AC, Mains, Stabilizer, Stage, Voltage

5 Interesting Flip Flop Circuits – Load ON/OFF with Push-Button

Last Updated on June 23, 2026 by Swagatam 129 Comments

Five simple yet effective electronic toggle flip flop switch circuits can be built around the IC 4017, IC 4093, and IC 4013. We will see how these can be implemented for switching a relay alternately ON OFF by alternately pressing a single push-button or through touch pads, which in turn will switch an electronic load […]

Filed Under: Mini Projects Tagged With: Circuits, Flip, Flop, Interesting, Load, ON

SCR/Triac Controlled Automatic Voltage Stabilizer Circuit

Last Updated on April 9, 2025 by Swagatam 77 Comments

TRIACCONTROLLEDSTABILIZERCIRCUIT

In this article I have explained a relatively simple triac controlled automatic mains voltage stabilizer circuit, which uses logic ICs and a few triacs for controlling the mains voltage levels. Why Solid State Being solid state in design, the voltage switching transitions are very smooth with minimum wear and tear, resulting in efficient voltage stabilization. […]

Filed Under: Voltage Control and Protection Tagged With: Automatic, Controlled, SCR, Stabilizer, Triac, Voltage

Simple Hi Efficiency LED Torch Circuit

Last Updated on June 1, 2026 by Swagatam 84 Comments

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A simple LED torch circuit that would light up 3 white LEDs from a 6 volt supply and would make your battery last forever is described here. A useful voltage doubler circuit is incorporated here to make a highly efficient circuit using just a handful of components. Introduction Learn more how to build it. White […]

Filed Under: Lamps and Lights Tagged With: Efficiency, LED, Simple, Torch

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