Musicman 5 String Bass A guitar collection is actually similar to an energetic mike coil. For decades, energetic microphones have been wired with the style coil attached to the primary of the microphone's transformer, and not called to surface (‘floating'). The microphone's situation is typically linked to the cable shield, which is attached to the mike amplifier's ground (see Rane's site for more discussion).
By and large, energetic microphones are very quiet products consequently of the mixture of transformer isolation and balanced, hanging transmission lines through the duration of, along with protected, humbucking coils.
So why not instruments? Guitars are once plagued by noise. Humbucking pickups are just a partial (though essential!) solution. Well-known alternative is to move practicing the guitar pickup to a healthy result, being a microphone. The same idea was published this 2001 patent software like this Musicman 5 String Bass?