Thurston Moore Jazzmaster A best guitar pickup is essentially similar to a dynamic mike coil. For many years, energetic microphones have now been sent with the voice coil mounted on the principal of the microphone's transformer, and maybe not introduced to floor (‘floating'). The microphone's event is normally connected to the wire guard, that will be connected to the mike amplifier's ground (see Rane's website for more discussion).
By and big, dynamic microphones are very calm units consequently of the mix of transformer isolation and balanced, hanging sign lines throughout, in addition to guarded, humbucking coils.
So why don't you instruments? Instruments are notoriously affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. Well-known answer is to float the guitar pickup to a healthy result, as being a microphone. A similar strategy was printed this 2001 patent program such as Thurston Moore Jazzmaster?