Dave Mustaine Signature Guitar A electric guitar pickup is basically just like an energetic mike coil. For many years, active microphones have already been wired with the style coil mounted on the principal of the microphone's transformer, and maybe not recommended to ground (‘floating'). The microphone's case is typically connected to the wire shield, which will be attached to the mike amplifier's soil (see Rane's website for more discussion).
By and large, vibrant microphones are very quiet devices as a result of the mixture of transformer isolation and healthy, flying sign lines through the duration of, in addition to protected, humbucking coils.
So why not instruments? Instruments are notoriously affected by noise. Humbucking pickups are merely an incomplete (though crucial!) solution. The obvious option is to float the guitar collection to a healthy productivity, as being a microphone. A similar strategy was published this 2001 patent software like this Dave Mustaine Signature Guitar?