392C21K

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The 392C21K is a common rotary potentiometer and rheostat. In practical applications, a rotary potentiometer or rheostat consists of a resistor of fixed value that produces an electrical voltage when a wiper arm is rotated. The output voltage is adjusted from the turning knob or an external power source. The 392C21K is an adjustable single-turn rotary potentiometer or rheostat with an insulating resistance of 100 ohms which results in a maximum power rating of 5 watts.

Since the voltage output of a rotary potentiometer or rheostat is proportional to the rotation of its wiper arm, its principle of operation is quite simple. As the external power source is able to maintain a constant voltage, the resulting current will pass through the resistor and through the rotor arm. This motion of the arm causes a change in the resistance of the resistor as the rotor arm is turned, resulting in an adjustment of the voltage output.

The 392C21K is an adjustable single-turn rotary potentiometer or rheostat, which means that the output voltage can be adjusted from the turning knob or external power source. The adjustment range of this particular type of potentiometer is 0 to 100 ohms. The physical size of the 392C21K is similar to that of other single-turn rotary potentiometers, with a diameter of 22mm and a length of 28.7mm.

The 392C21K is a commonly used component in a broad range of industrial and domestic applications. For example, it can be used as an adjustable tool for controlling the speed of motors, circuit pulsing, temperature control and many other applications. It is also used in audio amplifiers, light dimming systems, and voltage regulators. Furthermore, it is suitable for use in AC and DC circuits.

Apart from its use as a rotary potentiometer or thermistor, the 392C21K can also be used as a rheostat. In a rheostat, the resistance is changed by turning the knob in either direction which will cause the voltage output of the rotary potentiometer to change accordingly. Another use of the 392C21K is as a variable resistor, which is used to fine-tune the level of resistance in a circuit. The various uses of the 392C21K as a rotary potentiometer or rheostat, as a variable resistor or a thermistor, make it a widely used and highly sought after component in the industry.

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