relays in series

throbscottle · Jun 11, 2013

If I connect two or more relays in series, will the stand off voltage for the whole be close to the sum of the individual stand off voltages? The switching voltage doesn't have to change, it's the stand off voltage that matters.

ericgibbs · Jun 11, 2013

throbscottle said:
If I connect two or more relays in series, will the stand off voltage for the whole be close to the sum of the individual stand off voltages? The switching voltage doesn't have to change, it's the stand off voltage that matters.

hi throb,

Are the relays the same coil voltage and resistance.?

throbscottle · Jun 12, 2013

Thanks Eric, they are, yes, but I actually meant connecting the contacts in series!

EternityForest · Jun 12, 2013

I think the standoff would be close to the sum, but it you ever close one without the other, depending on current, you might have a spark gap in the open relay that will destroy it pretty quick.

throbscottle · Jun 13, 2013

That's what I thought - just needed to hear it from someone else!

Thanks

relays in series

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relays in series

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