momentary to latching

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hemi 426

Joined Apr 8, 2013
1
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.
 

wirednuts

Joined Nov 13, 2011
20
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!
 
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