Here I'm showing how to make a Ebow or some thing that works like that
After getting bored of searching over inter net i got this http://www.logosfoundation.org/elektron/ebow_amp.gif
thin making according to schematic it didn't worked(as some parts were no where to find)
so after experimenting with the circuit i come with this
though i need a cover/body for it.
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Step 1: Things I Used
things i used
1) op amp LM386
2) 10 uF cap X 2
3) 100uF cap
4) 220uF cap
5) .473 uF cap
6) 9V battery + battery plug(or clip or any thing to connect battery)
& 7) most important induction coils that are customized X2 (i obtained them from old CFLs inductances)
Step 2: Making It
it can be made according to the given schematics try to keep all objects closer to op amp chip
as for the coils it can be customized as
(rest is same as in circuit diagram)