Relay Coil and Its Normally Closed Contact

Assume that we have a relay. If we connect the normally closed contact of the relay with the coil of relay and then connected them to the electricity what will happen?

You will have invented the buzzer.

It will chatter until it burns the coil out.

Regards.
Gary

You haven't tried it yet, where's your sense of adventure?

You will have re-invented the buzzer.

Do it with an old GPO (post Office) relay (24vDC) - then touch the terminals to get a hefty belt from back emf's!

>It will chatter until it burns the coil out.

True if the relay's coil is the only load. But if there is any other load on the relay, I think the contacts would melt and weld before the coil burns out...

It's a race to failure of some sort either way.

>True if the relay's coil is the only load. But if there is
>any other load on the relay, I think the contacts would melt
>and weld before the coil burns out...

Ah Yes! That reminds me being on site many years ago....
a contactor was connected to a 37KW motor.

On switch on it chattered loudly for around 3 secs.. we couldn't stop it soon enough...