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Newly Updated Circuit Projects:

Simple RGB LED Controller Circuit

Last Updated on June 1, 2026 by Swagatam 49 Comments

rgbcontroller

In this post I have explained how to make a simple RGB (Red, Green, Blue) LED controller circuit which may be designated to flash a group of RGB LEDs with a particular sequencing pattern. The idea was requested by Mr. Navdeep. Technical Specifications I want to make a display board with red, green and blue […]

Filed Under: Lamps and Lights Tagged With: Controller, LED, RGB, Simple

High Power Industrial Mains Surge Suppressor Explored

Last Updated on January 3, 2024 by Swagatam Leave a Comment

highenergyvaristor

In this post I have explained a high energy surge suppressor circuit using high capacity industrial MOVs for suppressing high current mains surges in industrial electrical lines. The Circuit Problem: I’ve been reading a lot of your design ideas and I am extremely impressed with your designs. I don’t have anywhere near your level of […]

Filed Under: Voltage Control and Protection Tagged With: High, Industrial, Mains, Power, Suppressor, Surge

Incubator Reverse Forward Motor Controller Circuit

Last Updated on June 30, 2026 by Swagatam 18 Comments

incubatortimerreverseforwardmotor

In this post I have explained a reverse forward timer circuit for operating an incubator motor mechanism with a preferred set of movements. The idea was requested by Mr. Anwar Technical Specifications I am from Indonesia….. I Need Schematics For Incubator Timer with High Torque Motor (DC Motor Power Window in Car). I am trying […]

Filed Under: Motor Controller Tagged With: Controller, Forward, Incubator, Motor, Reverse

Blinking an LED with Arduino – Complete Tutorial

Last Updated on June 1, 2026 by Swagatam 2 Comments

a 2

The post comprehensively discusses a basic Arduino code implementation guide for blinking its on-board LED. The data was built, tested, and written by Jack Franko.   CODE: for simply inbuilt LED on pin 13 of ARDUINO BOARD by default it is programed to blink frequently at 50 Mili Seconds  as it in description it will […]

Filed Under: Lamps and Lights Tagged With: Arduino, Blinking, Complete, LED, Tutorial

SPDT Solid State DC Relay Circuit using MOSFET

Last Updated on December 21, 2021 by Swagatam 122 Comments

100ampssr

In this post we’ll study a simple high current mosfet based SPDT DC relay, which can be used in place conventional bulky SPDT mechanical relays. The idea was requested by Mr. Abu-Hafss. Working Concept A simple high current SPDT solid state DC relay or a DC SSR can be constructed using a couple of mosfets […]

Filed Under: Inverter Circuits Tagged With: DC, MOSFET, Relay, Solid, SPDT, State

Morse Code Flasher Circuit for Lighthouse

Last Updated on August 2, 2020 by Swagatam 9 Comments

MORSECODETIMERCIRCUIT

In this post I have explained a simple morse code lamp flasher circuit which may be used for model lighthouse signalling applications. The idea was requested by Mr. Frank Gardner.  Technical Specifications I am in need of a unique flashing circuit. I have built several exact scale models of the light house at Yerba Buena […]

Filed Under: Sensors and Detectors Tagged With: Code, Flasher, Lighthouse, Morse

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