Top China Cymbals A electric guitar pickup is essentially just like a powerful microphone coil. For decades, powerful microphones have been wired with the voice coil attached with the principal of the microphone's transformer, and perhaps not recommended to ground (‘floating'). The microphone's case is typically linked to the cable shield, which is connected to the mike amplifier's surface (see Rane's web site for more discussion).
By and big, energetic microphones are extremely calm units consequently of the mix of transformer isolation and healthy, floating transmission lines throughout, as well as protected, humbucking coils.
So why don't you instruments? Guitars are notoriously overwhelmed by noise. Humbucking pickups are just a partial (though important!) solution. Well-known option is to move the guitar collection to a healthy result, being a microphone. An identical idea was printed this 2001 patent request like this Top China Cymbals?