P232-DFC20BR5K

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Rotary Potentiometers and Rheostats are two very different kinds of devices that often get lumped together because they are both adjustable resistors.  A rotary potentiometer, sometimes called a rotary dial, is a variable resistor with a potentiometer shaft that rotates as the user turns the knob.  This type of variable resistor is primarily used to modify the electrical signal going to a device (such as a light dimmer).

The P232-DFC20BR5K is an example of a rotary potentiometer.  It is a single-turn type of variable resistor with a maximum resistance of 20K ohms.  The device is designed to be used in applications requiring precise adjustment over a wide range of resistances.  You can mount the device to a panel or board with the help of a nut or with direct soldering.  The P232-DFC20BR5K features a linear taper and a low electrical noise level.

Rheostats, on the other hand, are two-terminal devices with adjustable resistance that are used to regulate current.  This type of device is designed to be connected in series with a source and a load, and by adjusting the resistance, it can control the amount of current passing through the circuit.  Rheostats are commonly used to control the volume of an amplifier, the speed of an electric motor, and to regulate the brightness of a light bulb.  They can also be used as voltage dividers, where the resistance of the rheostat is precisely adjusted to obtain a desired voltage output.

The P232-DFC20BR5K is a rotary potentiometer, not a rheostat, and thus does not share the same function or application field.  The working principle of a potentiometer is based on the voltage divider and is relatively simple; the resistor is connected across a voltage source with one end of the resistance connected to ground.  When the user turns the knob, the resistance of the potentiometer changes and the voltage output changes accordingly.  The P232-DFC20BR5K is designed specifically for applications requiring precise adjustment over a wide range of resistances.

In conclusion, Rotary Potentiometers and Rheostats may seem similar but have completely different functions and application fields.  The P232-DFC20BR5K is an example of a rotary potentiometer which is used to modify the electrical signal going to a device when the user turns the knob, and is used in applications requiring precise adjustment over a wide range of resistances.  On the other hand, Rheostats are used to regulate current and can be used in applications such as controlling the volume of an amplifier, the speed of an electric motor, and to regulate the brightness of a light bulb.

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