Potentiometer (also known as the adjustable resistor) is an adjustable electronic components, its main effect in the circuit has the following several aspects

1 as a voltage divider

Potentiometer is an adjustable resistor, potentiometer or slide the handle when the handle, in dynamic contact resistance body sliding.

At this point in the potentiometer potentiometer output voltage can be obtained and applied voltage and the movable arm angle or travel into a certain relationship.

2 as a rheostat

As a rheostat potentiometer, it should be put into device at both ends, so the potentiometer in the scope, will get a

Resistance of smooth and continuous change value.

3 as a current controller

When the potentiometer as current controller is used, one of the selected current output must be sliding contact terminal.

Widely used for dimming, pitch, speed and other household appliances. Such as audio, amplifier, water heaters, microwave ovens, vacuum cleaners, dimmer.