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In Reply to: RE: Relays for Signal Switching? posted by Triode_Kingdom on August 05, 2017 at 12:13:35
Two things I see.
The switching contacts are gold plated silver. I believe silver nickle alone is adequate. They hold up well as witnessed by many years as the "gold" standard on relay pads.
Also think about putting a diode in parallel with the coil. It helps to save the coil.
Personally, I'm not a big fan of those compact relays. This is borne out because of many years of dealing with them in industrial applications. Low voltage, low current with minimal switching action they work fine.
I prefer the "ice cube" type and feel they are more robust. If you use the octal base type you can steal one for a 6sn7 front end in a pinch!
I thought the free-wheeling diode was to save what ever is switching the coil.
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
I recently had the unfortunate opportunity to witness this exact thing in the process of repairing a piece of non-audio equipment. The spike that's generated when the voltage source of a 12V relay coil is suddenly disconnected can exceed 200V.
Buy Chinese. Bury freedom.
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