Ebow

[Rob]

Tom Duff wrote:
> 
> Anybody know what the circuit inside an Ebow looks like?
> It's encased in epoxy & at $100 a pop I'm not really interested
> in sacrificing it.  There's obviously a couple of
> eletromagnetic transducers (one with a magnetized core) and
> an 8-pin integrated circuit (I'm guessing some kind of
> op amp, but which one?) on a tiny PC board, but
> I'd like more detail.  I want to build an Ebow-controlled
> zither, but the requisite 50 or so ebows are too pricy to
> ponder.  On the other hand, I'm fairly well tricked out for
> winding pickups & assembling circuitry.

More than likely, its just a coil with that generates a field with the
bow directing the waves... Or, it could be a piezo.. Either way, you
will get the strings to vibrate..
Generally, anything in epoxy is soo simple that anyone could build it,
so they epoxy it..
Rob