[sdiy] Opamp ICs (slightly OT)

[Robotboy8 at aol.com]

>Wow, + and - to where on the string..? One at each end of the string
>should keep them warm for winter playing.
>The magnetic field will dampen the vibration of the strings. The magnet
>in a pickup is only there to create the field that the steel string
>disrupts. So, you need a coil of wire to pickup these field
>disturbances, that get amplified to produce a signal.

No, I'm actually doing this partially to test a theory that the the string 
itself will generate oscillating current.

Side view:

   |-----------------------------------------------|
   =========================

where '=' is the fretboard, "|" is a nail stuck into the fretboard, and 
"----------" is the string.  A wire will be soldered to each nail, and one 
connected to the + and one the - of the phone jack.
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