Capacitive rocker potentiometer

A capacitive rocker potentiometer, comprising:

• a circuit board;
• a seat body, disposed on the circuit board, wherein the seat body defines a sliding groove,
• a slider, slidably disposed in the sliding groove of the seat body;
• an insulation sheet, connected with the slider;
• a rocker arm, rotatably disposed on the seat body, wherein the rocker arm is provided with a pulling head configured to slide the slider back and forth;
• a rocker rod, connected to the rocker arm;
• and
• a variable capacitor, comprising a first electrode plate and a second electrode plate corresponding to the first electrode plate, wherein the first electrode plate and the second electrode plate are electrically connected to the circuit board, the insulation sheet is inserted between the first electrode plate and the second electrode plate, and capable of moving back and forth between the first electrode plate and the second electrode plate, and the insulation sheet is configured to change an area directly facing the first electrode plate and the second electrode plate during movement of the insulation sheet, thereby to change a capacitance of the variable capacitor;
• and
• wherein the first electrode plate is parallel to the second electrode plate, and a gap between the first electrode plate and the second electrode plate is in a range of 0.25 to 0.3 millimeters (mm);
• the insulation sheet is not in contact with the first electrode plate and the second electrode plate, and the insulation sheet is parallel to the first electrode plate and the second electrode plate;
• and a distance between the insulation sheet and the first electrode plate or a distance between the insulation sheet and the second electrode plate remains unchanged during the movement of the insulation sheet.