3213X202M

Trimmer potentiometers, such as the 3213X202M, are also known as preset resistors. They are three-terminal, adjustable, and mechanical devices that are mostly used in applications where an adjustable resistance is needed. They are often used as simple voltage dividers or for controlling the speed of a motor, adjusting the loudness of a sound device, or for switching a circuit on or off. This type of device is primarily used as a variable resistor for applications where the exact resistance value must be acquired.

The 3213X202M Trimmer Potentiometer has a voltage rating of 200VAC at 5A and nominal resistance range of 0-5K Ohms. This part is available with either soldered or PCB mount terminals, with a total height of 8.5mm and a total working length of 20mm. These mini potentiometers have a typical impedance of 0.25GM at 50V, and a power rating of 1W. The temperature coefficient of this part is 100um/C. Standard electrical life with an operating temperature range of -25C to 110C is 2000 cycles.

The working principle of a trimmer potentiometer is similar to that of a standard potentiometer. This component consists of two resistive elements that are resisted in series, and a movable terminal is fixed between both. When this movable terminal is moved along the length of the resistor, the resistance between the two resistive elements will change. The resistance can be varied by fine-tuning or ’trimming’ the resistor. A number of trimmer potentiometers use an adjustable wiper which is connected to the movable terminal. This wiper is connected to an adjusting screw which is used to adjust the resistance.

Trimmer potentiometers are often employed in circuits that require a precisely adjustable resistance, such as in tuning radio receivers or amplifier feedback circuits. The trimmer pot can also be used for balancing signal levels, or for compensating for temperature changes that could affect component values in an electronic circuit. The 3213X202M Trimmer Potentiometer can be used in a variety of applications where an adjustable resistance is needed, such as for adjusting the volume of an audio device, controlling the speed of a motor, or for switching circuit on/off.

Trimmer Potentiometers are a convenient way to adjust the sensitivity of circuits, since they are a much more precise and accurate way of varying the resistance in a circuit. They are much smaller in size than standard potentiometers, and can therefore fit into a wider range of applications. Trimmer potentiometers are inexpensive and available in a variety of sizes and configurations, making them one of the most versatile and useful components in an electronic circuit.