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Whistle Activated Switch Circuit

Last Updated on January 2, 2024 by Swagatam Leave a Comment

whistle activated switch circuit diagram

In this post I have explained how to build a simple whistle sound operated relay circuit, which can be used for switching ON/OFF a 220 V load through whistle sounds. You can consider this circuit to be a whistle operated remote control circuit which will operate a connected load remotely through the sound of whistling. […]

Filed Under: Remote Control Circuits Tagged With: Activated, Switch, Whistle

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

Pressure Cooker Whistle Counter Circuit

Last Updated on January 1, 2024 by Swagatam 36 Comments

pressure cooker whistle

This circuit is designed to sense the whistles from a pressure cooker and count the number over a digital display. The system relieves the user from the stress of constantly monitoring the cooker and from manually counting the whistles. The idea was requested by Mr. P.K. Bajpai Design Concept In many of the Asian countries […]

Filed Under: Home Electrical Circuits Tagged With: Cooker, Counter, Pressure, Whistle

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