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Archives for 2013

High Current Voltage Doubler Circuit

Last Updated on March 12, 2025 by Swagatam 18 Comments

highcurrentvoltagedoublercircuit

In this post I have explained a voltage high current doubler circuit which will almost double the voltage that’s been applied at the input (up to 15V max), and also it becomes specifically useful since it allows higher current loads to be used at the output, in the order 10 amps. Since the voltage doubler […]

Filed Under: Electronics Theory Tagged With: Current, Doubler, High, Voltage

3 Interesting DRL (Day Time Running Light) Circuits for Your Car

Last Updated on February 23, 2025 by Swagatam 113 Comments

DRL 2

DRL or Day Time Running Lights are a chain of bright lights mostly LEDs installed just under a vehicle’s headlight, which illuminate automatically during day time to ensure that others can distinctly notice the vehicle approaching even from a distance. The following customized DRL circuit was requested by Mr. Jivesh Technical Specification as Provided by […]

Filed Under: Automobile Electronics Tagged With: Circuits, DRL, Interesting, Light, Running, Time

Single Phase Variable Frequency Drive VFD Circuit

Last Updated on February 9, 2025 by Swagatam 319 Comments

In this post I have explained a single phase variable frequency drive circuit or a VFD circuit for controlling AC motor sped without affecting their operational specifications. What is a VFD Motors and other similar inductive loads specifically do not “like” operating with frequencies that might be not within their manufacturing specs, and tend to […]

Filed Under: Motor Controller Tagged With: Drive, Frequency, Phase, Single, Variable, VFD

2 Simple School Bell Timer Circuits Explained

Last Updated on January 19, 2025 by Swagatam 15 Comments

school2Bbell2Btimer2Bcircuit

In this article I have explained two very useful school bell timer circuits which can be used for ringing school bell automatically for each period as per the set time duration. The first circuit is designed using a handful of IC 4060, and the second circuit concept is configured around the IC 4017. I have […]

Filed Under: Timer and Delay Relay Tagged With: Bell, Circuits, Explained, School, Simple, Timer

2 Simple Induction Heater Circuits – Hot Plate Cookers

Last Updated on January 19, 2025 by Swagatam 413 Comments

royerinductionheatercircuit

In this post I have explained 2 easy to build induction heater circuits which work with high frequency magnetic induction principles for generating substantial magnitude of heat over a small specified radius. The discussed induction cooker circuits are truly simple and uses just a few active and passive ordinary components for the required actions. Update: You […]

Filed Under: Temperature Controllers Tagged With: Circuits, Cookers, Heater, Induction, Plate, Simple

2 Simple Automatic Transfer Switch (ATS) Circuits

Last Updated on January 19, 2025 by Swagatam 107 Comments

automatictransferswitchcircuit

In this article we investigate an ATS circuit for initiating an automatic changeover from mains supply to generator supply through many intermediate transfer stages which involves activating the fuel valve, choke valve and the generator starter. The circuit was requested by Mr. Hari, and another dedicated reader from this blog. Requirement for 5kva LPG Generator […]

Filed Under: Grid and 3-Phase Tagged With: ATS, Automatic, Circuits, Simple, Switch, Transfer

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