Issues with popping with coda bypass design

JamieJ

Well-known member
Hi everyone,

After seeing @Chuck D. Bones thread on relay switching - it has got me thinking. I am tempted to have a go at Dave’s but I would love to get the bottom of this issue.

I often use codas relay bypass circuitry on designs. It is plagued by certain builds having a loud pop when switching on or off. But is not a consistent thing.

Looking at Dave’s set up of the relay switcher (same as @Robert) in the first picture.

The PCB input is grounded in bypass with coda bypass being set up differently.
Could this be the source of the popping?

E4C02627-AA7D-4BE7-8559-F08BC6681814.jpeg
A6A7C655-9023-4B80-8D7F-6135551A1306.jpeg
 
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