Ampeg Pf 20t A best guitar pickup is basically just like a vibrant mike coil. For decades, active microphones have been sent with the style coil mounted on the principal of the microphone's transformer, and perhaps not introduced to soil (‘floating'). The microphone's case is usually linked to the wire shield, which is attached to the microphone amplifier's soil (see Rane's website for more discussion).
By and large, energetic microphones are extremely quiet devices as a result of the mix of transformer isolation and healthy, flying indication lines all through, along with guarded, humbucking coils.
So why not guitars? Guitars are once affected by noise. Humbucking pickups are merely an incomplete (though important!) solution. Well-known option is to float your guitar collection to a balanced production, just like a microphone. A similar idea was printed this 2001 patent program like this Ampeg Pf 20t?