RJ22FX104

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Trimmer Potentiometers refer to a type of variable resistor with three connection terminals consisting of a resistive element that is mounted on an insulated frame, with two helical shafts that have a circular contact. The most common type of trimmer potentiometer is the RJ22FX104.

This type of trimmer comes in various shapes and sizes. It is typically used as a volume control or fine adjustment in circuits. The resistive element is formed as a wafer and contains two metal contacts, which are linked mechanically and electrically to the two helical shafts.

The RJ22FX104 application field and working principle are relatively simple. This potentiometer works by changing the resistance values of the resistive element, which is connected between two terminals, by action of the rotating shaft. As the shaft is rotated, a metal brush moves across the resistive element and completes a circuit.

The working principle is further illustrated in the figure below. In this figure, a voltage source is connected between the terminals A and B. A metallic brush is attached to the external rotating shaft and is in contact with the resistive element. The amount of voltage delivered at the Node Point C will vary depending on the position of the rotating shaft.

This process is known as potentiometry and is used in a whole range of applications, including audio volume, gain adjustments and audio selector switches. It is also used in adjustable lighting levels and motor speed control. The RJ22FX104 is a popular choice for these applications due to its robust and reliable design.

In conclusion, the RJ22FX104 trimmer potentiometer is a versatile variable resistor which is used widely in a range of applications. Its working principle is relatively simple and is based on changing the resistance values of the resistive element in order to control the amount of voltage delivered at the Node point.

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