Tall And Fat A electric guitar pickup is basically similar to a dynamic microphone coil. For decades, powerful microphones have been sent with the voice coil attached to the primary of the microphone's transformer, and perhaps not called to ground (‘floating'). The microphone's event is typically attached to the wire guard, that is attached to the mike amplifier's floor (see Rane's internet site for more discussion).
By and big, vibrant microphones are very quiet units as a result of the combination of transformer isolation and healthy, floating sign lines throughout, as well as guarded, humbucking coils.
Therefore why not guitars? Guitars are once affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. Well-known answer is always to float the guitar pickup to a balanced production, as being a microphone. A similar strategy was published this 2001 patent application like this Tall And Fat?