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Automobile Electronics

Cellphone RF Triggered Car Amplifier Auto-Mute Circuit

Last Updated on May 16, 2026 by Swagatam 4 Comments

car amp mute cell phone

The following article presents a circuit design which would mute your car amplifier music the moment it detects a cellphone call inside the car, enabling an automatic muting during the situations, and saving the user from the manual hassles. A loud music could be a nuisance while a phone call is being attended or dialed. […]

Filed Under: Automobile Electronics Tagged With: Amplifier, Auto, Cellphone, Mute, RF, Triggered

Automotive Trailer Lights Interface Circuit

Last Updated on May 16, 2026 by Swagatam Leave a Comment

This article explains an original Automotive Trailer Interface Circuit, a testament to the creativity of our reader Mr. August Peterson, an avid electronics devotee. We are honored to share his design and express our sincere thanks for his contribution to our platform. Overview Modern vehicles have load sensing on their rear lights to detect faults […]

Filed Under: Automobile Electronics Tagged With: Automotive, Interface, Lights, Trailer

Lamp Outage Detector Circuit for Car Turn Signal

Last Updated on May 16, 2026 by Swagatam 2 Comments

Flasherwithmalfunctionindicator

The O.E.M. turn signal flashing units installed in automobiles have two  basic functions i.e. Flasher and Lamp outage detection. These flashers  are usually built with an 8-pin IC like U2044B, U6432B etc. which are  specifically made for automotive flashers. Designed and Written By Abu-Hafss Circuit Operation NORMAL OPERATION: -input = Square wave between 11.89V – […]

Filed Under: Automobile Electronics Tagged With: Detector, Lamp, Outage, Signal, Turn

LED Lamp Circuit for Motorbike Headlamp

Last Updated on May 16, 2026 by Swagatam 57 Comments

In this post I have explained a simple 21 watt LED lamp circuit module which can be used as a direct replacement for a standard halogen lamp used in motorcycles headlamp. LED vs Halogen Lamp The proposed “halogen” LED lamp replacement module image can be seen below: Conventional filament type halogen lamp is shown below: […]

Filed Under: Automobile Electronics Tagged With: Headlamp, Lamp, LED, Motorbike

Cyclist’s Safety Light Circuit – Nighttime Visibility for Cyclists, Walkers, Joggers

Last Updated on May 16, 2026 by Swagatam 2 Comments

bicyclesafetylights

A simple flashing bicycle safety light circuit has been discussed in the following article In many occasions when we happen to go down the road at night, it is normal to meet cyclists that are visible only when they might be within walking distance. In case you’re a bike aficionado and prefer to stroll in […]

Filed Under: Automobile Electronics Tagged With: Cyclist, Cyclists, Light, Nighttime, Safety, Visibility

Car Warning Tone Generator for Ignition, Headlight, Turn Lights

Last Updated on May 16, 2026 by Swagatam 10 Comments

car warning tone

The circuit explained here is basically a warning signal generator designed largely for automobile application. It triggers a warning signal in a situation when the turn indicator switch is not restored back to its neutral status. The circuit is especially useful for all those cars where the turn indicator system is not supported with an […]

Filed Under: Automobile Electronics Tagged With: Generator, Headlight, Ignition, Tone, Turn, Warning

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