Guitar String Comparison A best guitar pickup is actually much like a powerful mike coil. For many years, energetic microphones have been wired with the voice coil attached to the primary of the microphone's transformer, and not introduced to floor (‘floating'). The microphone's situation is normally attached to the cable shield, that will be connected to the mike amplifier's soil (see Rane's website for more discussion).
By and large, energetic microphones are very calm devices consequently of the mix of transformer solitude and healthy, floating sign lines during, in addition to shielded, humbucking coils.
Therefore why don't you guitars? Instruments are once plagued by noise. Humbucking pickups are only an incomplete (though essential!) solution. Well-known answer would be to float practicing the guitar collection to a healthy production, as being a microphone. An identical thought was printed this 2001 patent request like this Guitar String Comparison?