Electric Guitar Fretboard A guitar collection is basically just like a powerful mike coil. For many years, vibrant microphones have already been wired with the voice coil attached with the primary of the microphone's transformer, and not recommended to floor (‘floating'). The microphone's case is typically attached to the wire guard, which can be attached to the microphone amplifier's floor (see Rane's site for more discussion).
By and big, powerful microphones are extremely calm units consequently of the combination of transformer isolation and healthy, hanging sign lines for the duration of, in addition to guarded, humbucking coils.
So why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though crucial!) solution. Well-known answer is to float your guitar collection to a healthy productivity, being a microphone. An identical thought was printed this 2001 patent request such as Electric Guitar Fretboard?