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-12v pulse???

Discussion in 'General Electronics Discussion' started by Oziam, May 27, 2012.

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  1. Oziam

    Oziam

    10
    0
    May 26, 2012
    Hi,
    I have a 12VDC SPDT relay, C is -12v, what I am trying to achieve is for the NC terminal(coil power off) to receive a -12v signal for a moment like a momentary switch or pulse then 0v.
    I guess a CAP should sort it out but what is confusing me is the wire connected to NC is polarity changing, when the relay is ON it switches to +12v :confused:
     
  2. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    651
    May 8, 2012
    Is there any particular reason that you want to generate a pulse with a relay? It's, by far, not a good choice.
     
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