Wiring shown overleaf will disconnect the battery when you
remove the jack plug from the input, and also when a DC plug
is inserted.
Snap the little metal tag off the pot to mount it flush
in the box.
You MUST use some kind of heat sink on the legs
of the diodes when soldering. They aren’t keen on
heat. Any more than a couple of seconds of iron
and they’re toast.
I’ve incorporated the Current Limiting Resistor for the
LED into the board for your pleasure.
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