Electric Guitar Setup Book A guitar pickup is essentially much like an energetic mike coil. For decades, energetic microphones have now been wired with the style coil attached to the primary of the microphone's transformer, and not called to soil (‘floating'). The microphone's situation is typically connected to the cable guard, which can be attached to the microphone amplifier's floor (see Rane's internet site for more discussion).
By and large, energetic microphones are very quiet devices consequently of the mixture of transformer isolation and balanced, floating transmission lines for the duration of, in addition to guarded, humbucking coils.
So why not instruments? Instruments are notoriously overwhelmed by noise. Humbucking pickups are merely a partial (though crucial!) solution. The obvious answer is to float your guitar collection to a healthy production, as being a microphone. An identical idea was printed this 2001 patent program like this Electric Guitar Setup Book?