Circle Of Fifths Wheel A guitar pickup is essentially just like a vibrant mike coil. For many years, energetic microphones have been sent with the voice coil mounted on the principal of the microphone's transformer, and not referenced to surface (‘floating'). The microphone's event is typically connected to the cable guard, which will be attached to the microphone amplifier's floor (see Rane's website for more discussion).
By and large, energetic microphones are extremely quiet devices consequently of the combination of transformer isolation and healthy, hanging sign lines through the duration of, in addition to shielded, humbucking coils.
So why don't you guitars? Instruments are once plagued by noise. Humbucking pickups are merely an incomplete (though essential!) solution. The obvious answer is always to move the guitar collection to a healthy production, as being a microphone. An identical thought was printed that 2001 patent request like this Circle Of Fifths Wheel?