Inside Drum Triggers A electric guitar collection is basically similar to a dynamic mike coil. For decades, energetic microphones have already been wired with the voice coil attached to the primary of the microphone's transformer, and maybe not introduced to soil (‘floating'). The microphone's event is typically linked to the wire guard, which can be linked to the microphone amplifier's surface (see Rane's website for more discussion).
By and big, active microphones are very quiet units consequently of the mixture of transformer solitude and balanced, flying indication lines through the duration of, as well as guarded, humbucking coils.
So why don't you instruments? Guitars are notoriously plagued by noise. Humbucking pickups are only an incomplete (though important!) solution. The most obvious alternative is always to float your guitar collection to a balanced production, as being a microphone. The same idea was printed this 2001 patent application such as Inside Drum Triggers?