PDB181-K420K-102A2

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The PDB181-K420K-102A2 is a type of rotary potentiometer or rheostat. It is typically used as a variable resistor for volume, brightness, or other controls. The device is connected to a mechanism that rotates and turns the control knob, which results in the varying resistance and voltage of the circuit.

Unlike traditional mechanical potentiometers, the PDB181-K420K-102A2 is made of plastic and has a three-terminal design. The stationary body of the device is made from an electrically nonconductive material that is impervious to wear and tear and resists heat and corrosion. The moving element of the device is a rotor, which is connected to the knob. As the knob is turned, the rotor slides along the housing of the device in a linear fashion, allowing the resistance of the device to be precisely adjusted.

The PDB181-K420K-102A2 is a three-terminal device, meaning that it has one terminal to which current is applied, one to which current is returned, and one to which the resistor voltage is applied. In typical applications, the voltage applied to the third terminal is the same as that used to power the device. The rotor is then moved to vary the resistance between the terminals, which in turn changes the voltage at the third terminal.

The application field and working principle of the PDB181-K420K-102A2 can be summarized as follows. First, it is a type of rotary potentiometer or rheostat, used mainly as a variable resistor for volume, brightness, or other controls. Second, it is constructed of plastic and has a three-terminal design with a stationary body and moving rotor. Lastly, it is connected to a mechanism that adjusts the resistance between the terminals, and thus the voltage of the device, as the knob is rotated.

In conclusion, the PDB181-K420K-102A2 is a versatile and affordable rotary potentiometer or rheostat for a variety of applications. It is designed to provide precise control of voltage and resistance in a variety of applications, and its construction ensures a long and reliable service life. Its application field and working principle make it an ideal choice for a variety of projects and applications.

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