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Voltage

Solar Panel Voltage Regulator Circuit

Last Updated on November 20, 2023 by Swagatam 116 Comments

LM338

In this post I have explained how to construct a simple solar panel regulator controller circuit at home for charging small batteries such as 12V 7AH battery using small solar panel Using a Solar Panel We all know pretty well about solar panels and their functions. The basic functions of these amazing devices is to […]

Filed Under: Solar Controller Circuits Tagged With: Panel, Regulator, Solar, Voltage

Simple Crowbar Circuits for Over-voltage Protection

Last Updated on November 9, 2023 by Swagatam 40 Comments

SimpleDCOverLoadProtectionCircuit

A handful of simple DC over voltage protector crowbar circuits are discussed in this article. I have explained the working of each crowbar circuit through the following explanation. What is Crowbar Circuit If you are wondering what is a crowbar circuit, the definition is simple. It is a circuit network where a transistor or an […]

Filed Under: Power Supply Circuits Tagged With: Circuits, Crowbar, Over, Protection, Simple, Voltage

7 Easy Voltage Doubler Circuits Discussed

Last Updated on September 20, 2025 by Swagatam 71 Comments

555 voltage doubler

In this article I have explained 7 easy to build DC to DC voltage doubler circuits using a single IC 4049 and IC 555 along with a few other passive components. If you are wondering how a simple IC 555 can be used for making a powerful voltage doubler circuit, then this article will help […]

Filed Under: SMPS and Converters Tagged With: Circuits, Discussed, Doubler, Easy, Voltage

3 Tested 220V High and Low Voltage Cut OFF Circuits Using IC LM324 and Transistors

Last Updated on January 19, 2024 by Swagatam 184 Comments

over2Bvoltage2Bprotector

An AC mains high/low cut-off device will cut off or disconnect the mains supply from home electrical whenever a high voltage or low voltage situation is detected. In this way it ensures total safety to the home wiring and appliances from fire hazards, due to abnormal over voltages, brown outs or low voltages. In this […]

Filed Under: Voltage Control and Protection Tagged With: 220V, Circuits, High, OFF, Tested, Voltage

Make an LED AC Voltage Indicator Monitor Circuit

Last Updated on November 7, 2023 by Swagatam 7 Comments

mainsacvoltagemonitor

The LED AC mains voltage level indicator is a circuit that can be used for displaying and monitoring the instantaneous voltage level of any 220 V or 120 V mains home AC input, through a correspondingly rising and falling LED bar graph. A simple construction and accurate result are the main features of this tiny […]

Filed Under: Sensors and Detectors Tagged With: AC, Indicator, LED, Monitor, Voltage

Automatic Voltage Stabilizer Circuit for TV sets and Refrigerator

Last Updated on October 7, 2026 by Swagatam 128 Comments

wiring

Here we will study the design of a simple automatic mains AC voltage stabilizer which can be applied for safeguarding appliances like TV and refrigerators from fluctuating voltages. A voltage stabilizer is a device which is designed to sense inappropriate voltage fluctuations in AC mains supply inputs, and correct them to produce a stabilized voltage for the […]

Filed Under: Voltage Control and Protection Tagged With: Automatic, Refrigerator, sets, Stabilizer, TV, Voltage

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