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Voltage Control and Protection

Simple Boost Converter Circuit Diagrams using Transistors

Last Updated on January 27, 2025 by Swagatam Leave a Comment

boost converter working model

In this post I have explained a few very simple boost converter circuits using only BJTs, or transistors. Let’s learn more. What is a Boost Converter A DC boost converter circuit is designed for stepping-up or boosting a small input voltage levels to a desired higher output voltage level, hence the name “boost” converter. Since […]

Filed Under: Voltage Control and Protection Tagged With: Boost, Converter, Diagrams, Simple, Transistors

Adjustable Voltage Regulator Circuit using LM324 IC with Over Current Protection

Last Updated on February 17, 2024 by Swagatam 4 Comments

LM324 voltage regulator circuit

In this post I have explained how a single LM324 IC can be used to create an adjustable voltage regulator circuit with overload and over current protections. Basic Working A basic IC LM324 quad operational amplifier regulates an unregulated 28-volt input source to approximately ±0.02%, resulting in a 1 amp 0 to -20 V supply. The […]

Filed Under: Voltage Control and Protection Tagged With: Adjustable, Current, LM324, Over, Regulator, Voltage

Mains AC Home Protector Circuit

Last Updated on March 10, 2024 by Swagatam 200 Comments

home protector circuit

This simple mains 220 V, 110 V AC voltage home protector circuit will protect all the mains operated appliances of your home from high and low voltage situations and also from sudden voltage surge. The circuit can be used with 220 V AC inputs and also with 110 V AC inputs. The circuit will basically […]

Filed Under: Voltage Control and Protection Tagged With: AC, Home, Mains, Protector

DC Power Controller Circuit

Last Updated on January 3, 2024 by Swagatam 12 Comments

DC power controller circuit

In this post I have explained a DC power controller circuit which can be used for controlling the power of motors and lamps with maximum efficiency. By Sangeeta Naik How MOSFETs conduct to Handle Power Efficiently A minimum amount of power is lost whenever a power transistor (BJT or MOSFET) is in the turned off […]

Filed Under: Voltage Control and Protection Tagged With: Controller, DC, Power

How RCCB Works [with Circuit Diagram]

Last Updated on January 2, 2024 by Swagatam 6 Comments

RCD relay dismantled view compressed

A Residual Current Circuit Breaker (RCCB) or a ground fault circuit interrupter (GFCI), is a form of circuit breaker which will shut down mains AC power as soon as it detects an discrepancy between the incoming current and the outgoing current, through it. The primary objective of an RCCB device is to cut-off main AC […]

Filed Under: Voltage Control and Protection Tagged With: RCCB, Works

Prevent Relay Arcing using RC Snubber Circuits

Last Updated on January 2, 2024 by Swagatam 139 Comments

arc suppression compressed

In this article I have explained the formula and techniques of configuring RC circuit networks for controlling the arcing across relay contacts while switching heavy inductive loads. Arc suppression An arc is produced across the contacts when a switch or a relay is opened. With time, this condition can wear down the contacts. To overcome […]

Filed Under: Voltage Control and Protection Tagged With: Arcing, Circuits, Prevent, RC, Relay, Snubber

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