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I'm making a guitar pedal project, and I have a very basic understanding of electronics, so I'm having a hard time understanding some of the logic behind the schematic I have.

Stereo jack input

Why would I need to connect the battery to the jack input?

My original question was why would I need a stereo jack input if a guitar uses a mono jack, but looking at the schematic just made things worse for me.

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Plugging in a mono TS plug into the stereo TRS jack connects the battery to rest of circuit, and unplugging disconnects the battery. So the input plug couples as a power switch to save battery.

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  • \$\begingroup\$ I see, so if I had an on/off switch I could use a TS plug instead right? \$\endgroup\$
    – LALILULELO93
    Commented May 10, 2020 at 8:44

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