Systems and methods for plating printed circuit boards. The body made of ceramic coated aluminum includes holes through which a steel teeth of the brush part protrudes. The control circuit is adapted to regulate an output current of a power supply by generating a control signal to control switching of a switch. The input image encoding unit encodes an input image signal including an image object. A tip with a nanoscale apex is provided. When the detected temperature is lower than the temperature set point, a command is sent to the magnetic heat sink to take less heat out of the heat-generating component.