A carbon film tapped potentiometer is a resistance element having three lead terminals in which a fixed value of resistance is provided between two fixed terminals and the other end is slidable on the resistor body through a contact point. The resistance value of the wiper end and the fixed terminal varies depending on the position of the wiper Change. Carbon film potentiometer principle, features and uses are explained before.
Carbon film potentiometer application is quite broad, especially in some household appliances. There is a called the precision rotary potentiometer of the radio, that is, the potentiometer on the radio, it is a synthetic carbon film potentiometer, this potentiometer is by changing the position of the sliding end on the resistor body to obtain the strength of different new voltage To achieve the volume of the laying down regulation, generally with a control switch.