Jerry Garcia Merl Saunders A guitar pickup is actually much like a vibrant mike coil. For many years, vibrant microphones have already been wired with the voice coil attached with the principal of the microphone's transformer, and maybe not introduced to floor (‘floating'). The microphone's situation is normally connected to the wire shield, which will be attached to the microphone amplifier's ground (see Rane's internet site for more discussion).
By and large, powerful microphones are very calm devices as a result of the mix of transformer isolation and balanced, suspended sign lines throughout, in addition to protected, humbucking coils.
So why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are just an incomplete (though crucial!) solution. The obvious alternative is to float practicing the guitar pickup to a healthy result, just like a microphone. A similar thought was published this 2001 patent application such as Jerry Garcia Merl Saunders?