It is equipped with a clip cord, foot pedal, and a voltage and amperage meter. The power box is what gives the tattoo machine its spark. It plugs in to an outlet or battery and supplies the tattoo machine with power via the clip cord. Current is then supplied from power box to machine by means of the foot operated pedal. Pressing down on the pedal allows current flow, releasing the pedal stops current flow.
Power is regulated by a voltage dial located on the power box itself.
Smaller coiled machines would require more voltage than a larger coiled machine to operate at the same amperage. In layman s terms, a machine with a six wrap coil is less powerful than a machine with a ten wrap coil. The tattoo machine itself is composed of several parts, but to keep things simple, I won t go into much detail with them. When the tattoo machine is operating, needle bars and needles are moving at approximately two thousand times a minute.