Drum Machine Digital A guitar pickup is basically similar to a powerful microphone coil. For many years, energetic microphones have already been wired with the style coil attached with the primary of the microphone's transformer, and maybe not recommended to floor (‘floating'). The microphone's situation is usually linked to the cable shield, that will be connected to the microphone amplifier's soil (see Rane's site for more discussion).
By and large, energetic microphones are extremely quiet units consequently of the mix of transformer isolation and balanced, hanging indication lines through the duration of, along with protected, humbucking coils.
So why not guitars? Guitars are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known option is always to float the guitar collection to a balanced production, being a microphone. An identical idea was printed this 2001 patent application such as Drum Machine Digital?