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Designing 45W flasher with short circuit protection

Posted: 14 Aug 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Automobile? flashers? electromechanical? flasher circuit? short circuit protection?

Automobiles use flashers for turn indications. Traditionally such control has been through electromechanical devices. However, the same functionality can be implemented using electronics at a fraction of the cost.

This design proposes such a scheme, which can be used for a load of 45 W. This application note presents the design of a low cost, flasher circuit with short circuit protection. The design incorporates the entire recommended design feature set for two wheeler flashers and includes low/high voltage operation, half load frequency doubling, and short circuit protection.

View the PDF document for more information.

Originally published by Texas Instruments Inc. at as "Design of a Low Cost, 45W Flasher with Short Circuit Protection Using LM2902 (Quad Op-Amp) and CSD18534".

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