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Automobile Electronics

Bicycle Dynamo Battery Charger Circuit

Last Updated on September 1, 2023 by Swagatam 32 Comments

dynamobatterychargercircuit

In this post I have explained a simple constant current bicycle dynamo battery charger circuit which can be used for charging a Li-Ion or Ni-Cd battery from a bicycle dynamo electricity source. The idea was requested by Mr. Saif Khan. Technical Specifications I want to charge a battery through a dynamo fitted to a cycle. […]

Filed Under: Automobile Electronics, Battery Charger Circuits Tagged With: Battery, Bicycle, Charger, Dynamo

LED Lamp Circuit for Motorbike Headlamp

Last Updated on June 29, 2022 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

Motorcycle Low Battery Over Discharge Protector Circuit

Last Updated on December 5, 2019 by Swagatam 37 Comments

motorcyclebatteryoverdischargeprotectorcircuit

A simple motorcycle battery over discharge protector circuit is explained in the following post. The circuit will prevent the battery from over-discharging by the motorcycle headlamp whenever the mo-bike alternator is not enabled or is idling in the neutral mode in which case the battery is normally subjected to excess loads via the headlamp bulb. […]

Filed Under: Automobile Electronics Tagged With: Battery, Discharge, Motorcycle, Over, Protector

Bicycle LED Light Circuit Using a Single 1.5V Cell

Last Updated on June 17, 2019 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

Car Speed Limit Warning Indicator Circuit

Last Updated on January 8, 2024 by Swagatam 30 Comments

carspeedlimitindicatorcircuit

In the following post I have explained a simple yet useful car speed limit warning indicator circuit which can be used in vehicles for getting an instant indication of a possible over speed limit conditions. The idea was requested by Mr. Abu-Hafss. Technical Specifications: Shall appreciate, if you could design a circuit to warn with […]

Filed Under: Automobile Electronics, Indicator Circuits Tagged With: Indicator, Limit, Speed, Warning

Make this Car Air Ionizer Circuit

Last Updated on June 4, 2019 by Swagatam 74 Comments

carionizercircuit

In this post I have explained the construction of a car air ionizer circuit which can be used for cleansing the atmosphere of car interior from smoke, pollution, dust particles, bad odor, pollen particles etc. The circuit was requested by Mr. Edalcor Zuproc. The Circuit Concept In one of my previous posts we saw how simply a home air […]

Filed Under: Automobile Electronics Tagged With: Ionizer

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