The Best Cordless Handheld Vacuum Cleaner A guitar pickup is actually similar to a vibrant mike coil. For many years, active microphones have now been wired with the style coil mounted on the primary of the microphone's transformer, and not called to ground (‘floating'). The microphone's situation is normally attached to the wire shield, which can be connected to the microphone amplifier's ground (see Rane's site for more discussion).
By and big, active microphones are very quiet products as a result of the mixture of transformer isolation and healthy, hanging indication lines throughout, as well as shielded, humbucking coils.
Therefore why don't you guitars? Guitars are once affected by noise. Humbucking pickups are just a partial (though crucial!) solution. The obvious option would be to move your guitar pickup to a healthy result, just like a microphone. A similar idea was published that 2001 patent software like this The Best Cordless Handheld Vacuum Cleaner?