Seymour Duncan Noiseless Jazz Bass Pickups A guitar collection is basically much like an energetic microphone coil. For decades, vibrant microphones have now been wired with the style coil mounted on the primary of the microphone's transformer, and perhaps not recommended to floor (‘floating'). The microphone's event is usually linked to the cable guard, which is attached to the mike amplifier's ground (see Rane's site for more discussion).
By and large, powerful microphones are very calm devices as a result of the combination of transformer isolation and healthy, flying sign lines for the duration of, along with guarded, humbucking coils.
So why not instruments? Instruments are once plagued by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known answer is to float your guitar pickup to a healthy production, being a microphone. A similar strategy was printed that 2001 patent request like this Seymour Duncan Noiseless Jazz Bass Pickups?