1
\$\begingroup\$

I have a mains relay switch (Packard C230B 2 Pole 30 Amp Contactor 120 Volt Coil) which allows me to turn on my pre-amp based on the existence of AC voltage on the amplifiers AC output plug (which is not sufficiently rated to drive the pre-amp). It's been working fine for quite a while, but generates a noticeable "PLONK" sound when switched off, which I know is because of the lack of flyback suppression on the circuit. I want to eliminate this and bought a RIFA PMR205 RC snubbing unit a while ago. Before I install this across the relay, I'd like to confirm that this is the right way to go about this (and yes, I should have never put the relay in without something like this in the first place, but I didn't know better at the time and it worked).

\$\endgroup\$

1 Answer 1

0
\$\begingroup\$

After reading up on this, places like edaboard confirmed that the snubber I have is correct and should be placed across the coil leads (so the connection controlling the functioning of the coil, not the power leads driving the pre-amp and other equipment). I have soldered my RC snubber on the lead wires and will report back on any issues once it has been operating for a while.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.