Duncan Phat Cat A guitar pickup is actually just like a powerful microphone coil. For many years, energetic microphones have been wired with the voice coil attached with the primary of the microphone's transformer, and not recommended to surface (‘floating'). The microphone's event is usually connected to the wire guard, which will be connected to the mike amplifier's floor (see Rane's site for more discussion).
By and large, energetic microphones are very quiet units consequently of the combination of transformer isolation and balanced, flying indication lines during, along with protected, humbucking coils.
So you will want to guitars? Instruments are once affected by noise. Humbucking pickups are only a partial (though important!) solution. The obvious answer is always to move the guitar pickup to a balanced result, as being a microphone. An identical strategy was printed this 2001 patent program such as Duncan Phat Cat?