In article ,
"Maynard A. Philbrook Jr." wrote:

In article ,
says...

I have a 12V SPST cube relay in my junque box. The diagram molded into the
relay1s housing includes a component connected in parallel with the coil
which looks suspiciously like a resistor.

It1s not a back-emf diode: I connected the relay coil using both polarities
(using a current-limited power supply) and the same current draw is
measured.


What is the purpose of this resistor?

Thanks,
Dave

more than likely a snubber network, they normally have a
resistor and cap in a single component..

Many times, they simply show it as a R across the coil because
it's in series with a cap.

http://en.wikipedia.org/wiki/Snubber

I haven't ever seen a snubber in a relay. It usually has the iron
designed to short-circuit fast field changes.

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