Robert Plant Today A guitar collection is essentially much like a dynamic microphone coil. For many years, vibrant microphones have been sent with the voice coil attached to the primary of the microphone's transformer, and maybe not introduced to ground (‘floating'). The microphone's situation is typically connected to the wire guard, that will be attached to the mike amplifier's surface (see Rane's website for more discussion).
By and big, vibrant microphones are very calm devices consequently of the combination of transformer isolation and balanced, hanging indication lines throughout, in addition to protected, humbucking coils.
Therefore why not instruments? Instruments are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. The most obvious answer is always to float the guitar pickup to a healthy productivity, just like a microphone. A similar idea was published this 2001 patent program such as Robert Plant Today?