3313J-2-102E

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Trimmer Potentiometers

A trimmer potentiometer, also known as a trimmer, is a three-terminal variable resistor used to adjust the resistance value in a circuit. It is commonly used to adjust the gain of an amplifier or to adjust the sensitivity of a transducer such as an accelerometer. Trimmer potentiometers are similar to standard potentiometers in that they both act as a variable voltage divider when used with a voltage source. However, with a trimmer potentiometer, the resistance is adjusted by turning a knob on the top of the device as opposed to a sliding control as found on a standard potentiometer.

3313J-2-102E Application Field and Working Principle

The 3313J-2-102E trimming potentiometer is designed for applications such as providing adjustable resistance for gain adjustments of audio equipment, filter resonance control, and regulation of feedback loop sensitivity. This trimmer potentiometer operates on a rotary motion, being composed of a conducting wire wound in a tight spiral between two metal plates. When the knob is turned, the resistance between the two plates is adjusted, allowing the user to fine-tune the resistance setting. The 3313J-2-102E trimmer potentiometer has a linear taper and a rated resistance of 102Ω, making it ideal for applications where precise adjustment is needed.

The 3313J-2-102E has three terminals, known as the periphery terminal, the wiper terminal, and the common terminal. The periphery terminal is connected to one end of the wire winding, while the common terminal is connected to the other. The wiper terminal is connected to the middle of the wire winding and is moved by adjusting the knob, allowing the user to control the resistance between the periphery and common terminals. As the knob is turned, the wiper terminal moves along the length of the resistor, effectively allowing the user to adjust the resistance in a linear fashion.

The 3313J-2-102E trimmer potentiometer is primarily used as an adjustable voltage divider, allowing the user to set the output voltage of a circuit with the help of a voltage source. When setting up the circuit, the variable voltage divider is connected to the voltage source, with R2 being the trimmer potentiometer. By turning the knob, the user can adjust the voltage at the output of the circuit, allowing them to adjust the gain or sensitivity of the circuit as needed. In short, the 3313J-2-102E trimmer potentiometer is an essential component for precise voltage regulation in many applications.

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