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Electronic Touch Organ Circuit

Last Updated on May 15, 2026 by Swagatam 9 Comments

circuit diagram

An electronic touch organ is an intriguing musical device which produces very pleasant musical notes in response to finger touches on special touch sensitive electronic pads or buttons. Modern day organs are, however, very costly which usually places these outside the reach of the majority of folks. Low cost options types lack performance, and are […]

Filed Under: Audio and Amplifier Projects Tagged With: Electronic, Organ, Touch

Electronic Drum Sound Simulator Circuits

Last Updated on May 15, 2026 by Swagatam 7 Comments

drum sound simulator compressed

In this post we talk about a couple electronic drum sound simulator circuits which can be used for replicating actual drum beat sound electronically, using a few op amps and few other passive electronic components. Using Capacitor as the Sensor Instead of Piezo Conventional electronic drum kits incorporate the use of piezo disc affixed to […]

Filed Under: Audio and Amplifier Projects Tagged With: Circuits, Drum, Electronic, Simulator, Sound

Mains AC Short Circuit Breaker/Protector – Electronic MCB Circuit

Last Updated on February 15, 2026 by Swagatam 117 Comments

ShortCircuitbreaker

In this post I will try to explain the making of a simple 220 V, 120 V AC mains short circuit breaker using an SCR and a triac combination, (researched and designed by me). The circuit is an electronic version of the normal main circuit breaker MCB units that we use in our homes. Note: […]

Filed Under: Voltage Control and Protection Tagged With: AC, Breaker, Electronic, Mains, Protector, Short

How to Build a Pyro-ignition Circuit – Electronic Pyro Igniter system

Last Updated on September 20, 2025 by Swagatam 7 Comments

pyroignition 2

The following conversation was made by Mr.Tom and me regarding the circuit idea of a pyro-iginition system. I was asked to design the particular circuit idea by Mr.Tom in Fiverr.com. Technical Specifications The discussion explains the details of his requirement and how it was almost fulfilled by me Hi Swagatam, I was wondering if you […]

Filed Under: Temperature Controllers Tagged With: Build, Electronic, Igniter, Ignition, Pyro, System

3 Accurate Refrigerator Thermostat Circuits – Electronic Solid-State

Last Updated on January 19, 2025 by Swagatam 31 Comments

1 4

Interested to make an accurate electronic thermostat for your refrigerator? The 3 unique solid state thermostat designs I have I have explained in this article will surprise you with their “cool” performances. Design#1: Introduction The unit once built and integrated with any relevant appliance will instantly start exhibiting an improved control of the system saving […]

Filed Under: Temperature Controllers Tagged With: Accurate, Circuits, Electronic, Refrigerator, Solid, Thermostat

Simple Electronic Dog Whistle Circuit Explained

Last Updated on January 9, 2024 by Swagatam 6 Comments

ultrasonic dog whistle

An electronic dog whistle is a device that generates ultrasonic sound waves and is used for training dogs and for controlling excessive barking habit. Because dogs and domestic cats can hear ultrasonic frequencies, humans cannot, this dog whistle device is employed to train these animals. It is also sometimes known as a silent whistle or […]

Filed Under: Pets and Pests Tagged With: Electronic, Explained, Simple, Whistle

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