[sdiy] crackle box

[Henry Till]

Just curious what kind of opamp you are using to build
your crackle box.  the schematic uses a 709?  can you
still find these, or are you substituting another
opamp?

btw, i think touchpads are just any piece conductive
metal in this case - you could use a metal cabinet
knob or something of that i imagine...i may be
wrong... 

-h

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