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Automobile Electronics

Make this EV Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam Leave a Comment

In this post I will explain how to build and test a homemade yet very professional looking high power EV battery charger transmitter circuit using H-bridge fixed-frequency AC inverter topology, driving a series-resonant LC tank. I will also explain how to build a complementing EV charger receiver circuit for receiving the charging current from the […]

Filed Under: Automobile Electronics, Battery Charger Circuits Tagged With: Battery, Charger, EV

How to Make Powerful Car Headlights Using LEDs

Last Updated on May 16, 2026 by Swagatam 17 Comments

4 pin LED

In this post we see how to build an enhanced and efficient car headlight lamp using Pirhana LEDs. A car LED headlight is a powerful lamp built using high efficiency LED arrays, which creates extremely powerful headlight lamp for the car, along with a very high efficiency in terms power consumption. Using 4-pin Pirhana LEDs […]

Filed Under: Automobile Electronics Tagged With: Headlights, LEDs, Powerful

Simple Ignition Code Lock Circuit for Automobile Protection

Last Updated on May 16, 2026 by Swagatam 15 Comments

codeswitch 1

This extremely simple code lock switch circuit can be used for locking a vehicle’s ignition by typing a hidden code over the given micro switch keypads. So now you can use this simple code lock ignition circuit for probably securing your car from a possible theft. Alternatively the circuit may be used for any application […]

Filed Under: Automobile Electronics Tagged With: Automobile, Code, Ignition, Lock, Protection, Simple

How to Make Car LED Chasing Tail Light, Brake Light Circuit

Last Updated on May 16, 2026 by Swagatam 83 Comments

LEDTailLight1

I am presenting a circuit design here in response to a request sent by one of the avid readers of this blog. The proposed circuit is of a sequential LED light driver, especially designed to suit the application of a multipurpose car tail light indicator. Circuit Connections The circuit is integrated to the brake switch […]

Filed Under: Automobile Electronics Tagged With: Brake, Chasing, LED, Light, Tail

Simple Capacitive Discharge Ignition (CDI) Circuit

Last Updated on May 16, 2026 by Swagatam 346 Comments

cdi

In this post I have explained the circuit for a simple, universal capacitive discharge ignition circuit or a CDI circuit using a standard ignition coil and a solid state SCR based circuit. For an audio/video explanation, you can watch the following video representation: How Ignition System in Vehicles Work The ignition process in any vehicle […]

Filed Under: Automobile Electronics Tagged With: Capacitive, CDI, Discharge, Ignition, Simple

Car Turn Signal Flasher Circuit with Lamp Malfunction Indicator

Last Updated on May 16, 2026 by Swagatam 24 Comments

carturnsignalindicatorcircuit

In this post I have explained an automotive/car turn signal indicator circuit idea with a built-in load malfunction indicator, meaning an additional LED lamp fitted on the dashboard which would warn if any of the side indicators went bad or fused. The idea was researched and requested by Mr. Abu-Hafss. The Circuit Concept I have found a transistor-based flasher including a […]

Filed Under: Automobile Electronics Tagged With: Flasher, Indicator, Lamp, Malfunction, Signal, Turn

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