How To Play G Chord On Guitar A guitar pickup is actually much like an energetic microphone coil. For decades, active microphones have now been sent with the voice coil attached to the principal of the microphone's transformer, and not introduced to ground (‘floating'). The microphone's event is normally linked to the cable shield, which will be linked to the microphone amplifier's soil (see Rane's web site for more discussion).
By and big, active microphones are very quiet products as a result of the combination of transformer isolation and balanced, suspended transmission lines all through, in addition to guarded, humbucking coils.
So why not instruments? Guitars are once affected by noise. Humbucking pickups are only an incomplete (though important!) solution. The most obvious alternative would be to move practicing the guitar pickup to a balanced output, being a microphone. A similar idea was published this 2001 patent request like this How To Play G Chord On Guitar?