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Voltage Control and Protection

SG 3525 Automatic PWM Voltage Regulation Circuit

Last Updated on May 10, 2025 by Swagatam 12 Comments

partslist

In this post I have explained a simple configuration which can be added with all SG 3525/3524 inverter circuits for implementing automatic PWM output voltage regulation by the IC. The solution was requested by Mr. Felix Anthony. The Circuit Problem: Sir, I would need your help on a project about a schematic that I do […]

Filed Under: Voltage Control and Protection Tagged With: 3525, Automatic, PWM, Regulation, SG, Voltage

High Power Industrial Mains Surge Suppressor Explored

Last Updated on January 3, 2024 by Swagatam Leave a Comment

highenergyvaristor

In this post I have explained a high energy surge suppressor circuit using high capacity industrial MOVs for suppressing high current mains surges in industrial electrical lines. The Circuit Problem: I’ve been reading a lot of your design ideas and I am extremely impressed with your designs. I don’t have anywhere near your level of […]

Filed Under: Voltage Control and Protection Tagged With: High, Industrial, Mains, Power, Suppressor, Surge

How to Test a MOV (Metal Oxide Varistor) Surge Protector Device

Last Updated on August 1, 2024 by Swagatam 29 Comments

movtestsetupcircuit

In this article I have explained a set up for testing MOVs which are special devices specified for absorbing instantaneous high surge currents that may accidentally occur in our mains electrical lines. The idea was requested by Mr. Kevin  Technical Specifications  I’m Kevin Montañez, a university Electrical Engineering student here in Cebu, Philippines. As I […]

Filed Under: Voltage Control and Protection Tagged With: Metal, MOV, Oxide, Surge, Test, Varistor

Grid Transformer Fire Hazard Protector Circuit

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

transformerfireproetctioncircuit

In this post I have explained a smart mains fire hazard protector circuit which can be used for preventing mains grid transformers from over heating and causing sparks or even burning due to a possible fire. The idea was requested by Mr. Ravindra Shedge Technical Specifications I am Ravindra Shedge from Mumbai. I am looking […]

Filed Under: Voltage Control and Protection Tagged With: Fire, Grid, Hazard, Protector, Transformer

Automatic Generator Choke Actuator Circuit

Last Updated on January 2, 2024 by Swagatam 2 Comments

automaticchokeoperatorcircuit

In this post I have explained a simple automatic generator choke actuator circuit using a straightforward delay OFF timer circuit and a solenoid device.  The circuit was requested by Mr. Bob Perry. Technical Specifications I’m in need of a time delay schematic for the following project. I have an electric generator that I can start by […]

Filed Under: Voltage Control and Protection Tagged With: Actuator, Automatic, Choke, Generator

Automatic Voltage Regulator (AVR) Analyzer

Last Updated on January 2, 2024 by Swagatam 39 Comments

avr analyzer circuit

The post below discusses an automatic voltage analyzer circuit which can be used for understanding and verifying the output conditions of an AVR. The idea was requested by Mr. Abu-Hafss. Technical Specifications I want to make an analyzer for Automotive Voltage Regulator (AVR). 1. The three wires of the AVR are connected to the corresponding […]

Filed Under: Voltage Control and Protection Tagged With: Analyzer, Automatic, AVR, Regulator, Voltage

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