Yamaha Keyboard Music Rest A electric guitar pickup is actually similar to an energetic microphone coil. For decades, dynamic microphones have already been wired with the style coil mounted on the principal of the microphone's transformer, and maybe not recommended to floor (‘floating'). The microphone's situation is normally linked to the cable shield, which will be connected to the mike amplifier's floor (see Rane's website for more discussion).
By and large, powerful microphones are very quiet devices as a result of the combination of transformer isolation and balanced, hanging sign lines during, as well as protected, humbucking coils.
So why don't you guitars? Instruments are notoriously plagued by noise. Humbucking pickups are only a partial (though crucial!) solution. The obvious answer is always to move your guitar pickup to a balanced productivity, being a microphone. The same idea was published this 2001 patent application such as Yamaha Keyboard Music Rest?