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Automotive Turn Signal Flasher - Lamp Outage Detection

Discussion in 'General Electronics Discussion' started by abuhafss, May 1, 2013.

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  1. abuhafss

    abuhafss

    348
    11
    Aug 3, 2010
    Hi Everybody

    I am working on an automotive turn signal flasher circuit.

    Basically, the original flasher unit installed in a vehicle has lamp outage detection function i.e. when any of the 3 indicator lamps fail, the flashing frequency is doubled. The flasher circuits available on the web lack this function.

    Simply, I am looking to incorporate lamp outage detection function in 555 astable flasher circuit. Shall appreciate your help.
     
  2. abuhafss

    abuhafss

    348
    11
    Aug 3, 2010
    Last edited: May 4, 2013
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