Re: Alternating relay

I used an alternating relay once that had a single coil.  When
actuated, the solenoid pulled on an alternating mechanism with two
latching positions, which would reverse every time you actuate the

So this altnerating relay would flip and flop based upon a single on/off input voltage? If so, then I think I could start with that.

Do you have any idea what brand or model this was?

My web searches for alternating relays have yielded products which have very sparse descriptions. I think they only flip if the polarity is flipped.


off.  You would still need a way to turn the motor off when the
pressure switch turns off, but it's easy enough to put an ordinary
relay in series with the alternating relay.

Makes sense I think. I'd power the coils of the contactors with the outputs of the alt relay.

The pressure switch needs to feed the supply side of the contactors so that power will shut off even though a coil is still engaged.

If I do it this way, I need an alt relay whose coil uses 220v, correct? (Or at least 120)

I'll keep thinking about this, but I'm curious how else it might be done.

-Ryan
.

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