Phil Lesh Tour A best guitar collection is essentially similar to an energetic microphone coil. For decades, dynamic microphones have now been wired with the voice coil mounted on the primary of the microphone's transformer, and not introduced to floor (‘floating'). The microphone's case is typically connected to the cable shield, which will be attached to the mike amplifier's ground (see Rane's web site for more discussion).
By and big, vibrant microphones are very quiet devices consequently of the mix of transformer isolation and balanced, hanging transmission lines through the duration of, along with guarded, humbucking coils.
So why not instruments? Guitars are notoriously plagued by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known option would be to float the guitar pickup to a healthy productivity, just like a microphone. A similar thought was printed this 2001 patent application such as Phil Lesh Tour?