Audio Technica Condenser A guitar collection is actually similar to an energetic microphone coil. For many years, dynamic microphones have now been sent with the voice coil attached with the primary of the microphone's transformer, and maybe not recommended to floor (‘floating'). The microphone's event is typically connected to the cable shield, that is linked to the mike amplifier's soil (see Rane's web site for more discussion).
By and big, energetic microphones are extremely calm products as a result of the mix of transformer isolation and balanced, floating transmission lines during, in addition to shielded, humbucking coils.
So why not instruments? Guitars are notoriously affected by noise. Humbucking pickups are just a partial (though important!) solution. The obvious option would be to float the guitar pickup to a healthy productivity, as being a microphone. A similar idea was published that 2001 patent software like this Audio Technica Condenser?