PDV20-21M-103A

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PDV20-21M-103A Slide Potentiometers are designed as normal potentiometers and are most widely used to detect the rotary motion of the angular displacement by operating an actuator on a smooth potentiometer surface. It is usually connected with a power cord and provides instant position feedback to the controlling signal input device. The pressure force applied by the sliding actuator accumulates multiple electrical signals at the same time, and the output signal can be used to directly drive the motor to reposition the actuator.

PDV20-21M-103A Slide Potentiometers are characterized by having a circular track-like surface with a double-ended slider. The typical design includes a track with a resistance varying along its length, and two sliding contacts, one of which is buried in the track and is connected to a control voltage supply. The other slider is located on the outer edge of the track and is connected to a separate track. The resistance of the track varies with the distance from the center of the track, and the outer track is connected to the power source.

In addition, PDV20-21M-103A Slide Potentiometers have a non-contact type brushless angle sensor, which is responsible for measuring and controlling the position, direction, and route of the actuator. The angle sensor is usually applied in a substantially flat configuration, with a start point, an end point, and a center point. The measurement results are transferred by using a continuous DC analog voltage, an open collector digital pulse output, and by providing a latching type signal for angular data transfer.

The working principle of PDV20-21M-103A Slide Potentiometers includes the introduction of a separate linearity correction circuit, which is designed to increase linearity and adjust the properties of the potentiometer output. This system basically consists of a DC current source, a variable resistor, and a low power voltage-controlled amplifier. The variable resistor is usually connected between the output of the amplifier and the inverted control input. This arrangement allows to adjust the linearity of the potentiometer output to produce stable, predictable, linear voltage outputs over a wide dynamic range.

In conclusion, PDV20-21M-103A Slide Potentiometers are highly-efficient devices for precise angular displacement detection. The sensor can be connected with a power cord to provide instantaneous position and feedback to the controlling signal input device. The linearity correction circuitry allows offsetting nonlinearities to generate a stable voltage output. The range of application for these devices includes robotic actuator and wheel positioning in automotive industry, precision tuning and adjustment in medical and scientific instrumentation, as well as in a wide range of industrial equipments.

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