Sectional-type potential regulator

The utility model discloses a sectional-type potential regulator. The sectional-type potential regulator comprises a shell, wherein a circuit board and a rotating part are arranged in the shell; the circuit board comprises a substrate and a gold plated plate; the rotating part comprises a rolling element and a contact pin; the rolling element comprises a center shaft, is fixed on the substrate through the center shaft and is rotatably connected with the substrate. The sectional-type potential regulator has the advantages that a conventional potentiometer manufacturing method is changed, the electric conduction and the signal connection are realized through the internal rotating part in a contact manner, the potential control on an electric iron is satisfied in a temperature control regulation and functional selection process, the design of high regulation and control flexibility is realized on the basis that the regulation and control accuracy is effectively improved, the internal circuit board adopts the gol