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Potentiometer mainly used in what areas? Potentiometer mainly used in high-frequency power supply communication power to detect power supply module CNC equipment industrial equipment electrical equipment sensor power sensor transmitter broadcast audio oscillator set-top box welding What is potentiometer potentiometer is an adjustable element, it is an electronic device The electronic circuit for voltage and current adjustment purposes. In modern electronic technology, especially small, thin, solidified fast Meng development today, due to the potentiometer adjustable, so that it is still widely used in various fields, as home appliances, communications, marine, aviation, aerospace electronic equipment, instruments, measuring devices, automatic control and the computer can not be missing the electronic device, and when the required amount is almost limitless. International Electrotechnical Commission (IEC) and of the definition of the potentiometer is: as a three-terminal element divider used its two terminals of the resistor element connecting two terminals, and the third end to energy along resistor for the mechanical movement of the movable contact. English name potentiometer Potentiometer, when the potential is for a network circuit shunt, current limiting, attenuators, zeroing and compensation purposes, the movable contact terminals connected to either a fixed end of this time, It is a two-terminal device, known as a variable resistor (Variable Rsistor), we often say that the variable resistor VR abbreviation. From a structural point of view potentiometer, potentiometer by mechanical means mechanical input (rotation angle or linear displacement) into therewith determine the correspondence between the amount of electrical output (resistance value, voltage value, the output ratio, etc.) electromechanical conversion element. For terminations potentiometer, in order to facilitate the design and manufacture and use of its unified call states: --- when a side facing the potentiometer drive mechanism, adjust counterclockwise to the end of the shaft, electrically closest to move contact terminal end terminations. --- b-side movable contact terminals. c --- other terminal end terminals allow the use of numbers 1, 2 and 3, or yellow, red and green, respectively, in place of a, b and c potentiometer potentiometer connection (or trim resistors etc.) conventional pin ( For example there are only three pins potentiometer), the resistance value is fixed at both ends, the middle pin on either end of the pin resistance value is variable; he is equivalent to starting from the middle of the pin into the potentiometer two resistors in series, the total resistance of the series is fixed; thus, if used as a variable voltage dividing resistors, the one end of the input voltage, the output of the intermediate terminated, the remaining end is grounded; if used as a variable resistor, one end of the input voltage, the output of intermediate termination, the remaining terminal can be left floating or connected to an intermediate terminal; pin on both sides of the potentiometer is a wholly resistance, in the middle of the foot is sliding node, access to power from one foot on either side of the middle foot extraction, can be varied with the rotation of the intermediate pin voltage. DC motor speed varies with the applied voltage, so that rotation of the intermediate voltage pin change, to change the motor speed. Positive and negative changes in DC power supply, you can make the motor reversal, the potential does not have this feature. Potentiometer action potential Cautions line design and use of components of engineering and technical personnel in the selection and use of potentiometers, to take into account all of the mechanical structure and electrical requirements. It should also pay attention to the installation and use requirements potentiometer can affect performance and reliability. First choice potentiometer economic point of view to examine its performance, that is to say, according to the potential in line role to determine. Which is an important parameter. Some important parameters need not be too demanding. For example, preset potentiometers is once adjusted, generally no adjustment, quite a long time to maintain its original state work. So the wear life, noise are not demanding, adjustment potentiometer in the circuit generally used as a rheostat regulates the current, the contact resistance variation, the limiting current movable contact and contact reliability becomes very important. While the potential use of the device, the instrument panel of more than a voltage divider effect. And to adjust so often wear life, moving noise has grid requirements. Potentiometer for special purposes should be selected according to their actual needs. Some designers believe that all electrical parameters should be higher index components to ensure their design requirements, this is very scientific. If the designer of preset potentiometers noise not only move by panel potentiometer to ask, even for the kick resistor layer and a silver electrode at is also considered not allow it to make the design phase detachment with actual needs, not only the lack of science, the economy in view of the lack of guidelines put forward the following issues in the use of (1) the potential to be working in the rated power range due to the design, improper use of the power dissipation exceeds the rated value will cause the potentiometer internal overheating and damage. Note that the ambient temperature especially at high temperatures load should be based on product standards for the design of the power curve down potentiometer. (2) in use while allowing the DC current problem anodizing may occur when moving contact via the potentiometer. In this case the best connection element with the positive terminal connected to the negative side of the movable contact