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-   -   Relay audio switcher (https://www.diyaudio.com/forums/analog-line-level/219159-relay-audio-switcher.html)

raidfibre 6th September 2012 01:17 AM

Relay audio switcher
 
I'm curious what people think of this method for switching audio with relays.

The goal is to switch with no DC bias to prevent popping.

Hence the 1 Meg shunt around the relay contact with a 10uF AC coupling capacitor. The high value resistor couples the DC level to the capacitor but the 1 Meg and 4.7K output resistor (R9/R10) shunt the channels to -93dB when the relay is open.

Any thoughts?

AndrewT 6th September 2012 09:16 AM

pic?

raidfibre 6th September 2012 12:27 PM

1 Attachment(s)
I guess my PDF wasn't allowed. I'll add a PNG to this post.


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