Magnetic bow
It's now around 10 years I engage work about magnetic bow (like the guitar eBow) and have try make vibrate all the metal strings/plate/... passing around. As a non ingeneer, that come slowly and not straight, have experienced severals ways to manage them, and from now have my own design, way more strong than the original one.
Magnetic Bow circuit and the coils
The Magneton box containing all the circuits
On the eString traditional bows are also digitaly controlled
Magnetar instrument with the coil. All the circuit is inserted inside.
Tuning fork can also be magnetized^^^
test on a long cable... and it work...
String & bow test on a Wall
Dispositive I build for a dance project, using 8 bows on an instrument/table