Small Guitar Pedal Power Supply A electric guitar pickup is actually similar to a vibrant mike coil. For decades, powerful microphones have already been wired with the style coil mounted on the primary of the microphone's transformer, and not recommended to ground (‘floating'). The microphone's case is normally attached to the cable shield, that will be linked to the microphone amplifier's floor (see Rane's internet site for more discussion).
By and big, powerful microphones are very quiet units consequently of the mix of transformer solitude and healthy, flying indication lines for the duration of, in addition to shielded, humbucking coils.
Therefore why not guitars? Instruments are notoriously plagued by noise. Humbucking pickups are just a partial (though important!) solution. The obvious answer would be to float your guitar collection to a healthy productivity, being a microphone. The same idea was published this 2001 patent application like this Small Guitar Pedal Power Supply?