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Relay delay

nfsus

Yeah its turned off, touch it
May 9, 2011
421
216
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47
Arkansas
I'm using a micro relay to switch some stuff. The design is a constant 12v+ and uses a transistor to switch the 12v-. I want to put a delay in it with a capacitor. But where would you put that? Between the coil neg and ground?
 
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You can put it directly from the relay + terminal to ground. You can use a much smaller value capacitor however if you put it on the base of the switching capacitor to ground as it draws MUCH less current than the relay itself.
 
Rght now I have it across the switched negative and the constant pos at the coil.
You can put it directly from the relay + terminal to ground. You can use a much smaller value capacitor however if you put it on the base of the switching capacitor to ground as it draws MUCH less current than the relay itself.
 

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