A Paul Kemble web page - electronic switching.
Input Selector 4CH PCB (4-to-1 way)_Bare PCB_Analog Metric - DIY Audio Kit Developer
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Audio source selector for arduino - Tataylino.com
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8 Channel Audio Switcher Circuit under Switching Circuits -15054- : Next.gr
Analog signal selector switch - ElecCircuit.com
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Project 163
Audio Switch on CD4066 - EasyEDA open source hardware lab
Audio Switch – G4TGJ Homebrew – G4TGJ's blog about home brewing - amateur radio and beer.
Project 163
DIY Amplifier - Input Selector Revisited - YouTube
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4 channel stereo audio signal switch circuit diagram using CMOS
Digital Audio/Video Input Selector - Electronics For You
audio stereo channel selector circuit under Repository-circuits -31634- : Next.gr
