momentary to latching

Discussion in 'The Projects Forum' started by hemi 426, Apr 8, 2013.

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  1. hemi 426

    Thread Starter New Member

    Apr 8, 2013
    1
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    does anybody have a simple diagram that shows how to use a momentary switch to turn on a circuit then hit the momentary switch again to turn the circuit off.
     
  2. Biff383

    Member

    Jun 6, 2012
    49
    19
    Here you go.
     
  3. trader007

    Active Member

    Feb 27, 2010
    222
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  4. #12

    Expert

    Nov 30, 2010
    16,261
    6,774
    Looks good to me.
     
  5. wirednuts

    New Member

    Nov 13, 2011
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    ok. if anyone else wants to make this, i rounded up the cheapest parts i could find on digikey, that also had good thermal ratings.

    BS170_D75ZCT-NDMOSFET N-CH 60V 500MA TO-92

    NTD2955-1GOS-NDMOSFET P-CH 60V 12A IPAK

    CF14JT100KCT-NDRES 100K OHM 1/4W 5% CARBON FILM

    S1MQCT-NDRES 1M OHM 1/4W 5% CF MINI

    399-4491-1-NDCAP CER 0.1UF 50V 10% AXIAL

    they are all through hole components, so it should be easy to build. cost is about $25 shipped to make 24 of these :D you don't save much by ordering just a couple... Should be stable from -50C to 150C, and be able to switch up to 50w!
     
    Last edited: Apr 10, 2013
  6. declancole

    New Member

    Jan 27, 2015
    3
    0
    Has anyone built this circuit?
    Did it function as intended?
     
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