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2 Simple Voltage to Frequency Converter Circuits Explained

Last Updated on September 22, 2026 by Swagatam 7 Comments

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A voltage to frequency converter circuit converts a proportionately varying input voltage int a proportionately varying output frequency. The first design is using the IC VFC32 which is an advanced voltage to frequency converter device from BURR-BROWN specifically designed to produce an extremely proportional frequency response to the fed input voltage for a given voltage […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Converter, Explained, Frequency, Simple, Voltage

Very Simple BLDC Motor Driver Circuits using Back EMF

Last Updated on June 30, 2026 by Swagatam 50 Comments

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In this post we investigate what’s a BLDC motor and subsequently I have explained regarding the design of a sensorless BLDC motor driver circuit. BLDC CPU Fans Seen those fast moving fans in CPUs, voltage stabilizers, DVD players, and other similar equipment, which work with utmost efficiency, consuming minimum space, current and yet are able […]

Filed Under: Motor Controller Tagged With: BLDC, Circuits, Driver, Motor, Simple, Very

Solar, Wind, Hybrid Battery Charger Circuits

Last Updated on October 20, 2023 by Swagatam 225 Comments

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In this article I have explained a dual input hybrid solar and wind battery charger circuit using cheap and ordinary components. The idea was requested by one of the interested members of this blog. Technical Specifications Good after noon sir am designing a ” Solar and Wind energy harvest regulator circuit” which has two inputs […]

Filed Under: Solar Controller Circuits Tagged With: Battery, Charger, Circuits, Hybrid, Solar, Wind

5 Simple Siren Circuits you can Build at Home

Last Updated on May 16, 2026 by Swagatam 14 Comments

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In this post I have explained about a 5 simple siren circuits, using Arduino and also with ordinary components such as transistors and capacitors yet is able to produce an alarm sound at an excruciating level. The idea was contributed by “Abu-Hafss” Deeper in the article we also learn to make an advanced Arduino based […]

Filed Under: Automobile Electronics Tagged With: Build, Circuits, Home, Simple, Siren

3 Sound Activated Switch Circuits Explained

Last Updated on July 10, 2025 by Swagatam 131 Comments

In this post I have explained 3 simple sound activated relay switch circuits which can used as a module for any system that might be assigned to trigger by detecting some kind of sound pressure level. Or simply applications  such as a  voice activated alarm security circuit. 1) Circuit Objective Utilizing this basic sound activated […]

Filed Under: Sensors and Detectors Tagged With: Activated, Circuits, Explained, Sound, Switch

Motorcycle Voltage Regulator Circuits

Last Updated on September 13, 2026 by Swagatam 243 Comments

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In the article below I have explained a compilation of simple yet accurate motorcycle voltage regulator circuits, which can be used for regulating the varying alternator voltage into a fixed DC voltage. Voltage regulator circuit is very important in motorcycles and two wheelers since they ensure a regulated battery charging thus keeping the battery safe […]

Filed Under: Automobile Electronics Tagged With: Circuits, Motorcycle, Regulator, Voltage

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