What are the differences between potentiometers and adjustable resistors?

industrial potentiometer in foreign countries, also known as adjustable resistance or variable resistors, adjustable resistors and potentiometers in the domestic distinction. From the working principle of the structure and adjustable resistance, potentiometers and adjustable resistors are basically similar, but not all the same, so they are similarities and differences between the potentiometer and adjustable resistors in the end what is the difference, we Mainly from the following points to view:
1, the handle: Potentiometer with a handle, and adjustable resistors do not handle.
2, the resistance distribution characteristics: the potentiometer output characteristics have a variety of function characteristics, different potentiometer resistor body distribution characteristics are not the same; and adjustable resistor resistance body distribution is the same.
3, joint number: potentiometer potentiometer with double, and adjustable resistance does not.
4, the volume: long life potentiometer volume, solid structure, long service life. The adjustable resistance of the small size, the service life should be shorter.
5, anti-jamming performance: potentiometer metal shell in the circuit ground (joystick connected with the shell), so adjust the potentiometer when the interference is relatively small, you can achieve the purpose of interference suppression; and adjustable resistance without ground pins, regulation will By the human body induction interference.
6, the installation location and frequency of use: potentiometer installed in the circuit board or chassis, no matter what kind of installation, his handle needs to extend out of the case, a convenient adjustment, the machine often adjust the use of potential ; And adjustable resistance mounted on the circuit board, the use of the process is usually not adjusted, only in the troubleshooting of resistance adjustment.
7, the service life: potentiometer solid structure, long service life. However, due to frequent use of potentiometers, coupled with its mechanical movement, so in the same machine often potentiometer in the adjustable resistance in front of damage; and adjustable resistance structure is simple, improper adjustment easily damaged, shorter life, but because of The use of low frequency, so he did not show the shortcomings of life shortcomings.

Elaborate potentiometer-related knowledge

Linear Conductive Plastic Potentiometer in the role of the circuit in a very wide range, he not only in the circuit can be used alone, and in many cases with other electronic components with a variety of functions constitute the circuit. In this case,
Besides potentiometer
Potentiometer in the circuit's fundamental role is to provide a resistance for the circuit, the resistance is a physical quantity.
What is the tapped potentiometer? Usually someone called the resistance, popular speaking, the potentiometer in the circuit as the role played by the resistance in the same water.
On the conductor, the presence of potentiometers in the current flow resistance encountered, the specific performance is the resistance of the power consumption, it is clear from the potentiometer in this sense the role played by the negative. However, the circuit using the potentiometer of this feature, you can achieve many of the specific circuit functions.
Potentiometer is to provide a circuit with the resistance of components, potentiometers through the consumption of electricity, the distribution of current in the circuit, the purpose of a specific road.

SMD linear potentiometric displacement transducer in the bare resistor, pressing one or two removable metal contacts, contact position to determine the resistance between the resistor and the contact between the end of the resistance. When a voltage is applied between the two fixed contacts of the resistor body, the position of the contact on the resistor is changed by rotating or sliding the system, and a contact point between the rotary contact and the fixed contact is obtained, A certain relationship voltage.

Detection of the chip with a switch continuous potentiometer: For the chip with a switch potentiometer, in addition to the above method should be detected in the nominal potential of the chip potentiometer and contact, but also to detect whether the switch is normal.
First rotating potentiometer shaft handle, check whether the switch is flexible, connected, disconnected when there is crisp "creak" sound, with a multimeter R * 1 block, two table pen in the conductive plastic rotary potentiometers switch, respectively, two external welding On-chip, turn the potentiometer handle, so that the switch connected to the multimeter on the resistance value should be changed from infinity to 0 ohms in the "off" for the location of resistance is not infinite, then the chip potentiometer switch is damaged.

Detection of dual coaxial SMD angle sensor potentiometer: with a multimeter to block the appropriate range of resistance, were measured with double-chip potentiometer potentiometer on the two sets of resistance (ie, A, C between the resistance and A1, C1 Of the resistance value) are the same and with the nominal resistance value. Then the potentiometer A, C1 and the Custom Potentiometer A1 and C respectively shorted, and then use a multimeter to measure the center of the first B, B1 between the resistance value, in the ideal case, regardless of the potentiometer to the rotation axis to What position, B, B1 between the two points of resistance should be equal to A, C or A1, C1 between two points of resistance (that is, the multimeter pointer should always remain in the A, C or A1, C1 resistance scale Do not understand). If the multimeter pointer is deflected, it indicates that the potentiometer synchronization is not good.