Joan Jett Rock And Roll Hall Of Fame A guitar collection is actually similar to an energetic mike coil. For many years, powerful microphones have been wired with the voice coil attached with the principal of the microphone's transformer, and not introduced to soil (‘floating'). The microphone's case is normally connected to the cable shield, that will be linked to the mike amplifier's ground (see Rane's web site for more discussion).
By and big, active microphones are extremely calm units consequently of the mixture of transformer solitude and balanced, floating indication lines for the duration of, as well as shielded, humbucking coils.
Therefore why not instruments? Instruments are notoriously affected by noise. Humbucking pickups are just an incomplete (though essential!) solution. Well-known solution is always to move your guitar pickup to a healthy result, just like a microphone. An identical thought was published this 2001 patent application such as Joan Jett Rock And Roll Hall Of Fame?