Strat Wiring Noise A best guitar pickup is actually much like a dynamic mike coil. For decades, vibrant microphones have been wired with the style coil attached with the primary of the microphone's transformer, and maybe not introduced to floor (‘floating'). The microphone's event is typically attached to the cable guard, which is attached to the microphone amplifier's ground (see Rane's website for more discussion).
By and big, energetic microphones are very quiet units as a result of the mix of transformer isolation and healthy, suspended transmission lines through the duration of, along with guarded, humbucking coils.
So why not instruments? Guitars are notoriously overwhelmed by noise. Humbucking pickups are just an incomplete (though important!) solution. Well-known answer is to float practicing the guitar collection to a healthy production, as being a microphone. A similar strategy was published this 2001 patent software such as Strat Wiring Noise?