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Automobile Electronics

Car Radiator Hot Indicator Circuit

Last Updated on June 1, 2026 by Swagatam 3 Comments

car radiator indicator circuit 1

The proposed circuit is very useful which warns the car driver before hand once the radiator gets heated up above the preset level. How it Works The working of this circuit is very simple and works off on the car battery. The familiar IC555 is used here which is the heart of the circuit. The […]

Filed Under: Automobile Electronics, Indicator Circuits Tagged With: Indicator, Radiator

Darkness Activated Car Head Lamp Circuit with DRL

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

car day night light switch circuit

In this post I have explained a simple automatic darkness activated switch for car head lamps and the DRLs, initiated by the ignition triggers. The circuit helps to save battery power and prevents unnecessary wastage of energy. The idea was requested by Mr. Vladnemir. Technical Specifications I would like to build switch for driving car […]

Filed Under: Automobile Electronics Tagged With: Activated, Darkness, DRL, Head, Lamp

How to Make Car LED Bulb Circuit

Last Updated on June 1, 2026 by Swagatam 8 Comments

car led bulb circuit

Typically all car turn signal lamps are around 12 to 20 watt rated which are traditionally incandescent bulb types and produce much lower light intensities compared to LED lights. Here I have explained how these lamps can be replaced with high efficiency, high intensity car LED bulbs. LED Car Bulb Design The image below shows […]

Filed Under: Automobile Electronics, Lamps and Lights Tagged With: Bulb, LED

How to Connect Car LED Downlight: Circuit Diagram

Last Updated on June 2, 2026 by Swagatam Leave a Comment

A car LED downlight available in the market can be easily integrated to an existing car battery if its rating is identical to the battery’s voltage rating. I have explained more regarding one such request sent by Mr. Allwyn Siqueira. How to Connect Downlight to 12V Car Battery Hi Swagatam, I’ve just spent the last […]

Filed Under: Automobile Electronics, Lamps and Lights Tagged With: Connect, Downlight, LED

Car Door Close Optimizer Circuit

Last Updated on May 16, 2026 by Swagatam 18 Comments

In this post I have explained and tries to solve a common car door opening issue which may be seen in quite a few old model cars. The proposed circuit of a car door close optimizer was requested by Mr. Mark Rothwell. Technical Specifications Just stumbled across your site, hope you can help/advise me?I have […]

Filed Under: Automobile Electronics Tagged With: Close, Door, Optimizer

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

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