Shure Sm 58 A electric guitar pickup is actually similar to an energetic mike coil. For decades, dynamic microphones have now been wired with the voice coil attached with the principal of the microphone's transformer, and perhaps not referenced to floor (‘floating'). The microphone's case is usually connected to the wire shield, which will be attached to the microphone amplifier's ground (see Rane's web site for more discussion).
By and big, dynamic microphones are very calm units as a result of the mix of transformer solitude and healthy, hanging sign lines for the duration of, as well as shielded, humbucking coils.
Therefore why not instruments? Guitars are notoriously overwhelmed by noise. Humbucking pickups are only a partial (though important!) solution. The obvious option is to move the guitar pickup to a healthy production, being a microphone. A similar strategy was printed that 2001 patent software such as Shure Sm 58?