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Timer circuit

Discussion in 'Electronic Basics' started by P.Webb, Jan 25, 2007.

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  1. P.Webb

    P.Webb Guest

    Hi All,
    I want to make a time delay circuit using transistors,
    12v supply switch on a 3Watt bulb and go off after about 3 seconds
    if possible, I don't want to use a relay or 555
    and I would like to use pnp ZTX 751 transistors which I have plenty of !
    Thanks.....Peter
     
  2. Peter, since I recently posted something close to what you want, I'd
    like to save time and suggest that you might try something like the
    following:
    I haven't looked at the data sheet for the Zetex part, though. I'm
    assuming that you already know it can handle the 3W load.

    Jon
     
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