Keyboard Workstation Korg A guitar pickup is actually much like a dynamic mike coil. For decades, energetic microphones have been wired with the style coil attached with the principal of the microphone's transformer, and perhaps not referenced to surface (‘floating'). The microphone's case is usually connected to the cable shield, that is attached to the mike amplifier's ground (see Rane's site for more discussion).
By and large, energetic microphones are extremely calm devices consequently of the combination of transformer solitude and healthy, hanging transmission lines for the duration of, in addition to guarded, humbucking coils.
So why don't you guitars? Guitars are notoriously plagued by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The most obvious answer is always to float your guitar collection to a balanced productivity, being a microphone. A similar idea was printed this 2001 patent application such as Keyboard Workstation Korg?