Guitar

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Humbucker

A humbucker (or Humbucking pickup) is a type of electric guitar pickup, that uses two coils, both generating string signal. Humbuckers have higher output than a single coil pickup since both coils are connected in series.
A humbucking pickup is essentially two single coil pickups (...) since the coils are connected in series and out of phase, noise and interference are significantly reduced via common-mode rejection. Humbuckers get their name from the fact that they cancel out the interference (they "buck the hum") induced by alternating current, which is normally experienced with single coil pickups.

Traditional "Open Coil" (uncovered) humbucker pickup:

Covered humbucker pickup on Les Paul:

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