Ibanez Ac240 Opn A guitar collection is essentially similar to an energetic mike coil. For many years, energetic microphones have now been sent with the voice coil mounted on the primary of the microphone's transformer, and maybe not called to floor (‘floating'). The microphone's event is typically linked to the cable guard, that is linked to the mike amplifier's surface (see Rane's web site for more discussion).
By and big, active microphones are extremely calm units as a result of the combination of transformer isolation and healthy, suspended indication lines through the duration of, along with protected, humbucking coils.
Therefore why not instruments? Instruments are once overwhelmed by noise. Humbucking pickups are only a partial (though crucial!) solution. The most obvious answer is always to float your guitar pickup to a healthy production, just like a microphone. The same idea was published this 2001 patent application such as Ibanez Ac240 Opn?