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Principle, Function and Application of rotary switch potentiometer
Date：2018-12-18
Views：344
The rotary switch potentiometer is actually a kind of variable resistor. Because it generates a voltage potential or a change of electromotive force during operation, it obtains a voltage or resistance proportional to the input end at the output end, so it is called a potentiometer. .
The linear rotary potentiometer is mainly composed of contact brushes, carbon diaphragms, rotating shafts, lead terminals, bushings, outer casings, etc. The contact brushes and carbon diaphragms are the two most important parts, and the contact brushes act as electricity. The effect of the transfer, and the carbon film brings the characteristics of the resistance change, which directly determines the use effect and life of the rotary potentiometer.
The main function of the linear rotary potentiometer is to adjust the voltage and limit the current. The effect is to adjust the volume, speed, temperature, brightness, contrast, frequency and other measures, and its main purpose is similar to the rotary encoder, that is, any device that needs to rotate the adjustment parameters. , you can use the rotary potentiometer.
Some friends don't understand that the rotary encoder looks the same as the rotary potentiometer when designing the product. What is the difference?
The linear rotary potentiometer is an electronic component having three terminals, two fixed contacts and one sliding contact, which can change the resistance between the sliding end and the two fixed ends by sliding. Its main purpose is the volume control in various audio source equipment or the control of various levels and powers in electronic equipment. It can also be used as a position or angle sensor, or as a tungsten bulb dimmer or electric heater. Control elements of wire power regulators, etc.
The rotary encoder is the same as the rotary potentiometer with three pins. However, a rotary encoder is a device that compiles or converts a signal or data into a form that can be used for communication, transmission, and storage. The main functions are: frequency adjustment, volume adjustment, light intensity adjustment, menu selection, speed adjustment, temperature adjustment, etc.
What is the role of the rotary switch potentiometer?
The role of the rotary potentiometer is summarized in the following three points:
1. Control current: When the selected current output terminal is the sliding contact terminal, the rotary potentiometer can be used to control the current.
2. Partial voltage: that is, the partial voltage is divided, when the potentiometer slides or the rotary handle adjusts the moving contact to slide. The output of the potentiometer can obtain an output voltage that is related to the applied voltage and stroke of the potentiometer.
3. Change the resistance: When the rotary switch potentiometer is connected to the two ends of the device, the potentiometer can obtain a smooth and continuously changing resistance value within the stroke range, then the potentiometer plays the role of changing the resistance.
The linear rotary potentiometer is mainly composed of contact brushes, carbon diaphragms, rotating shafts, lead terminals, bushings, outer casings, etc. The contact brushes and carbon diaphragms are the two most important parts, and the contact brushes act as electricity. The effect of the transfer, and the carbon film brings the characteristics of the resistance change, which directly determines the use effect and life of the rotary potentiometer.
The main function of the linear rotary potentiometer is to adjust the voltage and limit the current. The effect is to adjust the volume, speed, temperature, brightness, contrast, frequency and other measures, and its main purpose is similar to the rotary encoder, that is, any device that needs to rotate the adjustment parameters. , you can use the rotary potentiometer.
Some friends don't understand that the rotary encoder looks the same as the rotary potentiometer when designing the product. What is the difference?
The linear rotary potentiometer is an electronic component having three terminals, two fixed contacts and one sliding contact, which can change the resistance between the sliding end and the two fixed ends by sliding. Its main purpose is the volume control in various audio source equipment or the control of various levels and powers in electronic equipment. It can also be used as a position or angle sensor, or as a tungsten bulb dimmer or electric heater. Control elements of wire power regulators, etc.
The rotary encoder is the same as the rotary potentiometer with three pins. However, a rotary encoder is a device that compiles or converts a signal or data into a form that can be used for communication, transmission, and storage. The main functions are: frequency adjustment, volume adjustment, light intensity adjustment, menu selection, speed adjustment, temperature adjustment, etc.
What is the role of the rotary switch potentiometer?
The role of the rotary potentiometer is summarized in the following three points:
1. Control current: When the selected current output terminal is the sliding contact terminal, the rotary potentiometer can be used to control the current.
2. Partial voltage: that is, the partial voltage is divided, when the potentiometer slides or the rotary handle adjusts the moving contact to slide. The output of the potentiometer can obtain an output voltage that is related to the applied voltage and stroke of the potentiometer.
3. Change the resistance: When the rotary switch potentiometer is connected to the two ends of the device, the potentiometer can obtain a smooth and continuously changing resistance value within the stroke range, then the potentiometer plays the role of changing the resistance.