72PTR200LF

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Trimmer potentiometers are small variable resistors commonly used in electronics applications to fine-tune circuit tuning and other parameters. The 72PTR200LF is one such example of a trimmer potentiometer, which is a low profile and board mount device designed for electronic prototyping and applications with limited space.

Application Field

The 72PTR200LF trimmer potentiometer can be used to adjust current and voltage for the components in its circuit. In some cases, such as those that require a sensitive adjustable variable resistance over a wide temperature range, this device can help maintain precision conditions. It is suited for applications such as:

• Audio signal gains
• Gauge controls
• Sensor adjustments
• Calibrations
• Electrical motors adjustments

Working Principle

The 72PTR200LF features a flexible moulded body with adjustable terminals and an encapsulated mechanism which is sealed for dust and water resistance. This sealed mechanism works by connecting the adjustable terminals to an internal resistance element which can be adjusted using a knurled wheel. This mechanism provides reliable operation without functional degradation over a wide temperature range.

The 72PTR200LF is functionally designed to be a three-terminal potentiometer, meaning it is composed of two fixed resistors connected in parallel, with the reference terminal at one end connected to a movable resistance element. When the wheel is turned, they potentiometer resistance between the adjustable terminal and the reference terminal changes. This resistance can be fine-tuned in order to fine-tune input parameters.

The 72PTR 200LF is also equipped with a spring-loaded contact for a preset position. This feature allows users to set a short circuit between the two ends of the resistance element, and then adjust the top terminal to contact wiper to the preset position. This feature adds more functionality to the device and makes it suitable for applications where the user needs a pre-calibrated value.

Conclusion

The 72PTR200LF is a trimmer potentiometer designed for applications with limited space and electronic prototyping. It’s sealed mechanism allows it to act as a three-terminal potentiometer, bringing reliable operation over a wide temperature range. Its adjustable terminals and spring-loaded contact for a preset position make it highly suited for precise calibrations and adjustments, such as audio signal gains, gauge controls, sensor adjustments, and electrical motors adjustments.

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