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RE: Relays for Signal Switching?

Posted by Triode_Kingdom (A) on August 5, 2017 at 15:41:23

In Reply to: RE: Relays for Signal Switching? posted by Eli Duttman on August 5, 2017 at 12:25:47:

That's probably what I'll do. The dry relays are attractive because they can be mounted in any position. Most now also offer really good specifications and pricing. After reviewing my project again, I realize the relays will be mounted on a vertical PCB. It won't be a problem to use the mercury-wetted type.

More on this subject, I wonder if there's really much difference in contact resistance and reliability between a dry relay with gold-plated contacts and the usual rotary or push switch? I remember Pioneer and Sansui receivers in the '70s and '80s with push switches that failed in droves. Even Deoxit didn't help for long, and the factories eventually provided new inserts (the push shaft with contacts) at no cost as an extended warranty item. My company must have replaced thousands of them.

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