1957 Les Paul A guitar pickup is actually just like a vibrant microphone coil. For decades, active microphones have already been sent with the style coil mounted on the primary of the microphone's transformer, and maybe not recommended to ground (‘floating'). The microphone's situation is normally connected to the wire shield, which is attached to the mike amplifier's ground (see Rane's website for more discussion).
By and large, vibrant microphones are extremely calm products as a result of the mixture of transformer isolation and balanced, hanging sign lines throughout, as well as guarded, humbucking coils.
Therefore why not guitars? Guitars are once affected by noise. Humbucking pickups are merely an incomplete (though important!) solution. The obvious solution would be to float practicing the guitar collection to a healthy result, just like a microphone. A similar thought was published this 2001 patent request like this 1957 Les Paul?