Automotive Turn Signal Flasher - Lamp Outage Detection

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abuhafss

Joined Aug 17, 2010
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Hi Everybody

I am working on an automotive turn signal flasher circuit.

Usually, the original flasher unit installed in a vehicle is IC-based which detects lamp outage i.e. when any of the 3 indicator lamps fail, the flashing frequency is doubled.

I am thinking of using a 555 flasher system or a 2-transistor flasher system and using some comparator IC to detect lamp outage.

I came across the attached schematic while googling, maybe this can be of some help.

I shall appreciate your assistance.
 

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bertus

Joined Apr 5, 2008
20,055
Hello,

I am closing this thread as it violates AAC policy and/or safety issues.

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Bertus
 
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