1. Rotary single potentiometer: this is a circular potentiometer. It has a metal rotary handle.The handle can be rotated at a certain Angle from left to right.But not 360 degrees.This potentiometer is usually 3 with the lead, some have 4 report lead, the fourth with the lead is connected to the shell of the lead (grounding pin), in the circuit used to ground the wire, in order to eliminate the human body when adjusting the potentiometer dry approach.

2. Straight-slip single potentiometer: this is a rectangular potentiometer.It has a vertical handle that slides in a straight line and does not rotate. Its pins are at the bottom.

3. Rotary double potentiometer: it is similar to the rotary single potentiometer, but it has two single potentiometers, each of which has the same characteristics.The organization adjustment of two single potentiometers is controlled by a rotating handle. Each single potentiometer has 3 pins.

4. Direct slide type double potentiometer: it is similar to the direct slide type single potentiometer. It is composed of two single potentiometers, and the organization adjustment of two single potentiometers is controlled by a rotating handle.

5. Direct slide SMT potentiometer: the direct slide SMT potentiometer has no pins. Compared with the ordinary potentiometer, it is much smaller in size and is mainly used in some small electronic appliances.

6. Rotary SMT potentiometer: like ordinary rotary potentiometer, rotary SMT potentiometer can change the resistance value by rotating adjustment.

7. Wire-wound potentiometer: the structure of this potentiometer is different from that of ordinary potentiometer. The power it can withstand is huge, and it can be larger than 360 reading rotation when adjusting the resistance value.

Precision potentiometer: precision potentiometer adjustment accuracy is high, commonly used in some precision circuits.

9 with a small switch potentiometer: often used to draw the controller, it is accompanied by a power switch, in the potentiometer just began to turn, first put through the switch in the potentiometer contact point, and then turn before the potentiometer adjustment.There are also many types of potentiometers with switches, such as the volume potentiometer in a radio or the switch in some larger rotary potentiometers.The potentiometer pin with switch is two more than the ordinary potentiometer. These two pins are the contact pin of the power switch.