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Mains

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

Mains 220 V AC Line Filter Circuit for Transient Suppression

Last Updated on August 30, 2023 by Swagatam 13 Comments

220 V mains AC filter circuit

The 220 V mains AC line filter circuit described here has two functions: it prevents high-frequency waves from being sent back into the power network and it protects connected equipment from power line disturbances and surges. This circuit employs a number of components, such as capacitors, resistors, inductors, and a varistor, which are deliberately positioned […]

Filed Under: Power Supply Circuits Tagged With: 220, AC, Filter, Line, Mains, Transient

Mains AC Current Detector Switch Circuit

Last Updated on May 1, 2023 by Swagatam 4 Comments

current transformer prototype image

The circuit I have I have explained in this article allows one to detect the current consumed by a device and to power one or more other devices accordingly. Indeed, the solution of a switchboard is not always applicable because it is often not very practical. Furthermore, some devices such as computers only start when […]

Filed Under: Sensors and Detectors Tagged With: AC, Current, Detector, Mains, Switch

Remote Control using Mains Power Line Communication

Last Updated on May 12, 2023 by Swagatam 44 Comments

main communication reciever

The proposed circuit will allow you to remotely control a mains AC operated appliance across rooms of your home through mains power line communication or PLC concept. In PLC technology, an electronic circuit which works as a transmitter is plugged-in to the mains wiring (220 V or 120 V) injects a modulating high frequency data […]

Filed Under: Remote Control Circuits Tagged With: communication, Control, Line, Mains, Power, Remote

Password Controlled AC Mains ON/OFF Switch

Last Updated on December 5, 2024 by Swagatam 1 Comment

LCD bb

In this post I will show how to construct a password based mains ON/OFF switch circuit, which can turn ON and OFF the AC mains supply, only when correct password is entered. This prevents the danger of electrocution of the technician who might be currently working with the high voltage lines and equipment. Password Protection […]

Filed Under: Arduino Projects Tagged With: AC, Controlled, Mains, OFF, ON, Password

200, 600 LED String Circuit on Mains 220V

Last Updated on January 19, 2025 by Swagatam 43 Comments

string 1

In this post I have explained the construction of a 200 to 600 LED circuit project, using series parallel  LEDs for creating an alphabetical display sign board. The idea was requested by Mr. Mubarak Idris. Circuit Objectives and Requirements I need a blinking LED light that show”WELCOME TO” blink and then “COLLEGE OF ENGINEERING” base […]

Filed Under: Lamps and Lights Tagged With: 200, 220V, 600, LED, Mains, String

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