Delayed Pulse help

Discussion in 'The Projects Forum' started by jelle2503, May 14, 2011.

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  1. jelle2503

    Thread Starter Guest

    Hello all

    I've really been looking hard the last couple of days for a solution, spent countless of hours searching everywhere. Normally am used to finding out all kinds of things myself, but now I'm just stuck. Really need to start looking for good study materials on this kind of subject, i'm really liking it.


    I need to delay a 2 second pulse, for 5 seconds. It's a 12v signal coming from my alarm that powers the startermotor relais of my motorcycle. It needs to be delayed to allow ignition (ECU) to run his DFI test procedures.

    Here's how it is now:

    12v |¯¯¯2s¯¯¯|_______________


    But I would like it to be like this:

    12v ____5s pause_____|¯¯¯2s¯¯|

    I have found this attachment on this forum, it looks to be what I need but I need different timing. Myself am unable to figure out what rating resistor and caps I need, in order to achieve a 5 seconds pause, and a 2 seconds pulse.

    http://forum.allaboutcircuits.com/attachment.php?attachmentid=2865&d=1208707980

    Is there anyone that can help me out? I'd pay you for your knowledge so my alarm will start the engine with a delay. lol I'm that desperate.

    Greetings from Netherlands, Amsterdam.
     
  2. SgtWookie

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