Digital Keyboard Weighted Keys A guitar pickup is actually just like an energetic mike coil. For many years, active microphones have now been wired with the style coil mounted on the principal of the microphone's transformer, and perhaps not introduced to surface (‘floating'). The microphone's case is typically connected to the wire shield, which can be attached to the mike amplifier's surface (see Rane's website for more discussion).
By and large, vibrant microphones are extremely calm units consequently of the mix of transformer solitude and balanced, flying transmission lines during, along with protected, humbucking coils.
Therefore why don't you guitars? Instruments are notoriously affected by noise. Humbucking pickups are just a partial (though important!) solution. The obvious answer would be to float the guitar collection to a balanced output, just like a microphone. The same strategy was printed this 2001 patent request such as Digital Keyboard Weighted Keys?