Tiantai Electronics is a leading China capacitive touch keypad manufacturer. Capacitive touch keypads rely on the change in capacitance a finger or body part has on the function of a circuit. The presence of a finger forms a parallel capacitance to ground that increases the value of the capacitor in the circuit. The human body introduces a small, parallel capacitance when touching circuitry.
Capacitive touch keypads rely on the change in capacitance a finger or body part has on the function of a circuit. The presence of a finger forms a parallel capacitance to ground that increases the value of the capacitor in the circuit.
A capacitive touch keypad is a type of touch-controlled electrical switch that operates by measuring change in capacitance.