CU1531E

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Rotary Potentiometers, Rheostats are broadly used in a variety of applications in the electrical industry. The CU1531E rotary potentiometer is an example of one such device. It is a three-terminal, potentiometer which has a 2.5mm metal shaft and provides a variable voltage or resistance output. The CU1531E rotary potentiometer also offers a low temperature coefficient and a high mechanical reliability.

Applications of the CU1531E Rotary Potentiometer

The CU1531E is suitable for use in consumer and industrial applications such as volume and tone control, gain control and ohm regulation. It can also be used for light dimming, temperature and pressure compensation, transducer and amplifier control, as well as electronic circuit and process control.

Working Principle

The CU1531E rotary potentiometer makes use of resistive elements which are wound coaxially around a shaft. When this shaft is turned, the resisters move in opposite directions in what is referred to as the ‘claw-effect’. This motion of the resistors against one another produces a varying analog signal at the output.

The claw-effect works by having one of the two terminal (known as ‘terminals A’) fixed to one end of the resistive element and the other terminal (terminal B) variable on rotation of the shaft. Terminal B is connected to a sliding contact wiper arm at the end of the shaft, which moves across the resistive element when it is rotated.

When the shaft is rotated in only one direction, the signal produced at the output is a linear ramp while the reverse rotation will cause a negative ramp. The value of the output signal at any given position is dependent on the resistance value at that position.

Precision and Accuracy of the CU1531E

The CU1531E rotary potentiometer is designed and manufactured for optimal precision and accuracy. Its linearity and temperature stability are better than 5% and 40ppm/°C respectively, as stated in the technical documentation for the product. Additionally, it is mechanically robust enough to withstand stresses from multiple rotations without causing any degradation to accuracy.

The CU1531E rotary potentiometer also has a wide range of temperature ratings, from -40°C to 105°C, and is available in both single turn and multi-turn configurations. The torque ratings for the device range from 100 mN.m to 1000 mN.m, providing a range of resistances from 1Ω to 10000Ω, depending on the model selected.

Conclusion

The CU1531E rotary potentiometer is a highly reliable and accurate variable voltage or resistance output device. It can be used in applications such as volume and tone control, gain control, ohm regulation, light dimming, temperature and pressure compensation, transducer and amplifier control, and electronic circuit and process control. The device has optimal linearity and temperature stability, a wide range of torque ratings ranging from 100 mN.m to 1000 mN.m, and a temperature rating of -40°C to 105°C.

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