The definition of potentiometer output line and the wiring method for external potentiometer speed control are as follows:
Definition of potentiometer output line:
Potentiometers typically have three pins, known as terminal 1 (terminal 1), terminal 2 (terminal 2), and terminal 3 (terminal 3). Among them, there is a fixed resistor connected between terminal 1 and terminal 2, and a sliding contact connected between terminal 3 and terminal 2. When the potentiometer knob rotates, the sliding contact moves on the fixed resistor, thereby changing the resistance value between terminals 1, 2, and 3.
Wiring method for external potentiometer speed control:
1. Connect terminal 1 (terminal 1) of the potentiometer to the positive pole of the power supply, terminal 3 (terminal 3) to one end of the load (such as the motor), and terminal 2 (terminal 2) to the other end of the load. In this way, the potentiometer can adjust the working state of the load and achieve speed regulation function by changing the resistance value between terminals 1, 2, and 3.
2. If it is necessary to adjust the resistance of the potentiometer to achieve speed regulation function, please pay attention to keeping the voltage between terminals 1 and 3 unchanged during the adjustment process. This can ensure that the adjustment process does not affect other parts of the circuit.
In practical applications, different types of potentiometers can be selected according to specific needs, such as linear potentiometers, exponential potentiometers, etc. Different types of potentiometers have different resistance variation characteristics and can be selected according to actual needs.
4. When wiring, please ensure that the rated power and withstand voltage level of the potentiometer meet the requirements of the circuit to ensure the stability and safety of the circuit.
