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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

Child Crying Monitor Circuit using Power Line Communication

Last Updated on March 22, 2023 by Swagatam 2 Comments

child cry detector circuit

In this child crying monitor circuit when the baby wakes up in their room, the parents are immediately notified, even if they are in another room of their home. A sensor detects the crying sound accompanying the wake-up. After appropriate processing, it sends a signal through the 220V power lines. The receiver, connected to any […]

Filed Under: Security and Alarm Tagged With: Child, communication, Crying, Line, Monitor, Power

Line Laser Controlled Motor Alignment Circuit

Last Updated on January 2, 2024 by Swagatam 17 Comments

laser line motor compressed

In this post I have explained a simple line laser controlled motor driver circuit, which works by responding to a precision horizontal laser line, generated from a line laser level device, and automatically adjusts the alignment of the connected tool or the job work with extreme perfection and accuracy. What is Line Laser The line […]

Filed Under: Motor Controller Tagged With: Alignment, Controlled, Laser, Line, Motor

Audio Delay Line Circuit – For Echo, Reverb Effects

Last Updated on May 28, 2022 by Swagatam 3 Comments

delay line block diagram

An audio delay line is a technique in which a given audio signal is passed through a series of digital storage stages, until the final audio output is delayed by a certain period (usually in milliseconds). When this delayed audio output is fed back to the original audio, it results in an amazingly enhanced audio, […]

Filed Under: Audio and Amplifier Projects Tagged With: Audio, Delay, Echo, Effects, Line, Reverb

Line Follower Robot Circuit without Microcontroller or Arduino

Last Updated on March 26, 2025 by Swagatam 8 Comments

line follower diagram

In this article I have explained a simple line follower robot circuit, also known as line tracker vehicle, using just a couple of op amps from the IC LM324 and a few other components, without using complex Arduino or microcontrollers. It means this project can be built without any coding, just by using discrete components, […]

Filed Under: Automation Projects Tagged With: Arduino, Follower, Line, Microcontroller, Robot, without

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

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