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Newly Updated Circuit Projects:

Simple Car Shock Alarm Circuit

Last Updated on May 16, 2026 by Swagatam 6 Comments

CARSHOCKALARMCIRCUIT

A simple car shock alarm circuit I have I have explained in this article can eb effectively used to alarm the owner each time the car comes across some kind of vibrational intrusion ether from a potential theft of simply a damaging hit from  an external source. Introduction Today most of the cars are equipped […]

Filed Under: Automobile Electronics, Security and Alarm Tagged With: Alarm, Shock, 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

3 Interesting DRL (Day Time Running Light) Circuits for Your Car

Last Updated on May 16, 2026 by Swagatam 113 Comments

DRL 2

DRL or Day Time Running Lights are a chain of bright lights mostly LEDs installed just under a vehicle’s headlight, which illuminate automatically during day time to ensure that others can distinctly notice the vehicle approaching even from a distance. The following customized DRL circuit was requested by Mr. Jivesh Technical Specification as Provided by […]

Filed Under: Automobile Electronics Tagged With: Circuits, DRL, Interesting, Light, Running, Time

Car Head Lamp Fader Circuit (Breathing Effect Generator)

Last Updated on May 16, 2026 by Swagatam 6 Comments

carheadlightmodifiedcircuit

The proposed circuit of a modified car head lamp fader, “breather” circuit generates a slow flashing effect over the head lamps every time the lamps are switched OFF. The “breathing effect” continues for a certain predetermined period after which the process automatically shuts off. The circuit was requested by Mr. Ray. Technical Specifications I just wanted to say that […]

Filed Under: Automobile Electronics Tagged With: Breathing, Effect, Fader, Generator, Head, Lamp

Multi-spark CDI Circuit

Last Updated on May 16, 2026 by Swagatam 108 Comments

multispark cdi circuit

In this post I have explained an enhanced multi-spark CDI circuit which is universally suited for all types of automobiles. The unit can be built at home and installed in a particular vehicle for achieving greater speed to fuel efficiency. The Circuit Concept The following diagram illustrates an enhanced version of a multi-spark CDI circuit. […]

Filed Under: Automobile Electronics Tagged With: CDI, Multi, spark

Bicycle LED Light Circuit Using a Single 1.5V Cell

Last Updated on May 16, 2026 by Swagatam 10 Comments

bicycleLEDturnlightcircuit

The proposed bike flasher flashes two white LEDs from a single 1.5V cell by using a solitary general purpose transistor, and does not need core for the involved transformer, the main core being the Air itself. Using Joule Thief Concept Every Joule Thief circuit uses ferrite rod or toroid core and its turns are wounded […]

Filed Under: Automobile Electronics Tagged With: Bicycle, Cell, LED, Light, Single

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