Automotive Turn Signal Flasher - Lamp Outage Detection

Discussion in 'The Projects Forum' started by abuhafss, May 4, 2013.

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  1. abuhafss

    Thread Starter Active Member

    Aug 17, 2010
    139
    2
    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.
     
    Last edited: May 4, 2013
  2. bertus

    Administrator

    Apr 5, 2008
    15,641
    2,344
    Hello,

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

    Quote:
    6. Restricted topics.

    The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

    • Any kind of over-unity devices and systems
    • Automotive modifications
    • Devices designed to electrocute or shock another person
    • LEDs to mains
    • Phone jammers
    • Rail guns and high-energy projectile devices
    • Transformer-less power supplies
    This comes from our Tos:
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    There will be enough sites where automotive questions can be discussed :
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    Bertus
     
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