Voltage Regulator

A voltage regulator is an electrical device that adjusts the rated input voltage to the desired output voltage. It features an adjustable autotransformer structure with a carbon brush assembly driven by the handwheel spindle and brush holder. The coil is uniformly wound around the toroidal iron core, and the carbon brush maintains close contact with the polished coil surface under spring pressure. Rotating the handwheel spindle drives the brush holder, allowing the carbon brush to slide along the coil surface. This mechanism changes the contact position between the carbon brush and coil, adjusting the turns ratio of the primary and secondary coils to achieve smooth, stepless voltage regulation within the adjustment range.