Electric Tuner On Acoustic Guitar A electric guitar pickup is actually similar to a dynamic microphone coil. For many years, dynamic microphones have been wired with the voice coil attached to the principal of the microphone's transformer, and not referenced to surface (‘floating'). The microphone's situation is normally linked to the wire shield, which will be connected to the mike amplifier's surface (see Rane's site for more discussion).
By and big, vibrant microphones are extremely quiet devices consequently of the mixture of transformer solitude and balanced, flying transmission lines during, along with shielded, humbucking coils.
So why don't you guitars? Guitars are notoriously affected by noise. Humbucking pickups are just a partial (though essential!) solution. The obvious solution would be to float the guitar pickup to a healthy production, being a microphone. A similar idea was published that 2001 patent software like this Electric Tuner On Acoustic Guitar?