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Trimmer Potentiometers

Trimmer potentiometers are adjustable mechanical devices that are used to set or adjust the electrical resistance of a circuit. Specifically, the 82MR500LF is a single-turn trimmer potentiometer with a full rotational angle of 300 degrees.

82MR500LF Application Field

The 82MR500LF is a specialty trimmer potentiometer designed for use in LED backlighting systems. It is used to adjust the luminous intensity of the LEDs in order to maintain an even illumination throughout the display. Due to its wide range of resistance values (15 Ω - 160 kΩ), the device can be used in a variety of applications where adjustable resistance is needed.

Some common uses for the 82MR500LF include, but are not limited to, controlling the audio level in radios and TVs, adjusting the level of RGB LED backlighting, and adjusting the contrast of LCD screens. It can also be used in voltage regulator circuits, as well as in measuring, transcribing, and instrumentation equipment.

82MR500LF Working Principle

The 82MR500LF is a rotary trimmer potentiometer that works by changing the position of an internal contact element along the length of the wiper track. This contact element, usually known as the “wiper”, is typically connected to a shaft or an externally accessible control wheel. As the shaft is rotated, the wiper moves along the track and changes the resistance of the device in proportion to its angle.

The device’s resistance varies depending on the wiper position, and typically decreases as the wiper moves along the track. This is useful for controlling varying resistances within a circuit without having to switch components or rewire connections. The total resistance range of the device is determined by the difference between the maximum and minimum resistance values, which is 100.95 kΩ for the 82MR500LF.

The 82MR500LF is a very precise device and can be used to accurately adjust and maintain constant resistance values. It has a low tolerance of 2.5%, which means that the resistance will remain very close to the set value, even in fluctuating electrical environments.

Conclusion

The 82MR500LF is a single-turn trimmer potentiometer designed for use in LED backlighting systems and other applications requiring adjustable resistance. It has a full rotational angle of 300 degrees and a total resistance range of 100.95 kΩ, allowing it to be used in a wide variety of applications. This device is very precise and has a low tolerance of 2.5%, allowing it to maintain constant resistance values even in fluctuating electrical environments.

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