DC JACK

[BIGBADBOIGUITAR]

Hi I'm building a PCB board at the moment with a 3PDT attached.  I was wondering if I actually need a d.c jack attached to the power?

[Digital Larry]

This post should be in the "Build Your Own Stompbox" area, but to answer your question, if your circuit draws low enough current to have decent battery life from a 9 volt battery, then no you don't necessarily need a DC power jack.  Many people run the ground through the input jack in such a case so that the battery doesn't drain if no cable is plugged into the input.  The power is switched in that way rather than the 3PDT to avoid a gigantic turn on/off pop.  I don't have a schematic to refer you to at the moment.

[BIGBADBOIGUITAR]

Hey thanks that was helpful information