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Automobile Electronics

Automotive LED Driver Circuits – Design Analysis

Last Updated on May 16, 2026 by Swagatam 38 Comments

telltale lights automotive

In cars or automobiles, LEDs have grown to be the preferred choice of lighting. Whether it’s the rear tail-lights or the tell-tale indicators in the cluster as indicated in Figure 1 below, all incorporate LEDs nowadays. Their compact dimensions helps versatility in design and offers the prospective to be as durable as the vehicle’s life […]

Filed Under: Automobile Electronics Tagged With: Analysis, Automotive, Circuits, Design, Driver, LED

4 Solid-State Car Alternator Regulator Circuits Explored

Last Updated on May 16, 2026 by Swagatam 87 Comments

car voltage regulator circuit

The 4 simple car voltage current regulator circuits I have explained below is created as a immediate alternative to any standard regulator and, although developed principally for a dynamo it will function equally effectively with an alternator. If the functioning of a traditional car alternator voltage regulator is analyzed, we find it amazing that these […]

Filed Under: Automobile Electronics Tagged With: Alternator, Circuits, Explored, Regulator, Solid, State

3-Pin Solid-State Car Turn Indicator Flasher Circuit – Transistorized

Last Updated on May 16, 2026 by Swagatam 6 Comments

car solid state flasher unit

Although, most of the car electronics have evolved into solid-sate versions, a turn indicator flasher unit is one device which still depend on a relay based design in many of the modern cars. Disadvantages of Relay Based Flasher There are a couple major disadvantages of a relay based electromechanical flasher unit: 1) First, these being […]

Filed Under: Automobile Electronics Tagged With: Flasher, Indicator, Solid, State, Transistorized, Turn

Automobile Engine RPM Servicing Meter Circuit (Analogue Tachometer Circuits)

Last Updated on May 16, 2026 by Swagatam 4 Comments

analogue tachometer

These useful lightweight, cheap, analogue tachometer circuits are developed for facilitating car or auto servicing mechanics for precisely adjusting a car ignition system RPM to get maximum efficiency from it. The proposed circuits are actually combined results of a tachometer and a dwell meter. Application The car RPM servicing meter circuit can be applied for […]

Filed Under: Automobile Electronics Tagged With: Analogue, Automobile, Engine, Meter, RPM, Servicing

Converting Wasted Spark Ignition to Sequential Spark, for High Efficiency Combustion

Last Updated on May 16, 2026 by Swagatam 37 Comments

wasted spark 1

In this post I have explained a simple method of converting a wasted spark type ignition system in an automobile, into an enhanced, sequential spark, 6 cylinder engine type ignition system. The idea was requested by Mr. Brenton, as given below: Main Requirements I was looking through the car and motorcycle section but couldn’t find […]

Filed Under: Automobile Electronics Tagged With: Converting, High, Ignition, Sequential, spark, Wasted

Automobile Tester Probe Circuit [Car Fault Finder Probe Circuit]

Last Updated on May 16, 2026 by Swagatam 4 Comments

car electrical fault finder compressed

This simple automotive electrical fault finder probe circuit will enable you to solve most electrical troubleshooting in your cars, tempos, motorcycles etc with a lot of ease and in a hassle free manner. The idea is very simple. The circuit exploits the high impedance gate value of the MOSFET which makes the circuit extremely sensitive […]

Filed Under: Automobile Electronics Tagged With: Automobile, Fault, Finder, Probe, Tester

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