Back To The Future Dance Song A guitar pickup is essentially just like a dynamic mike coil. For decades, dynamic microphones have been sent with the style coil attached with the primary of the microphone's transformer, and maybe not referenced to ground (‘floating'). The microphone's situation is normally attached to the cable shield, that is connected to the mike amplifier's surface (see Rane's internet site for more discussion).
By and big, powerful microphones are extremely quiet units consequently of the mixture of transformer isolation and healthy, suspended transmission lines through the duration of, as well as shielded, humbucking coils.
So why not instruments? Instruments are once plagued by noise. Humbucking pickups are only a partial (though essential!) solution. Well-known solution would be to float your guitar pickup to a healthy production, being a microphone. The same idea was published this 2001 patent application like this Back To The Future Dance Song?