3290W-1-103

Trimmer Potentiometers

Trimmer potentiometers (trimpots) are preset adjustable resistors which come in various shapes and sizes. They are used in a wide range of applications, including audio equipment, computers, and telecommunications. The 3290W-1-103 is an example of a trimpot that provides rotary adjustment, and is often used in communication equipment.

Application Field

The 3290W-1-103 is usually found in radio frequency (RF) circuits. Its applications include local oscillator circuits, voltage-controlled oscillator circuits, notch filter circuits, and antenna matching circuits. These circuits require highly accurate resistors to maintain the desired signal levels for optimal performance. The 3290W-1-103 provides excellent temperature stability and accuracy, making it ideal for use in RF circuits. It is also suited for automated production processes.

Working Principle

Trimpots operate using a basic principle, known as the Wheatstone Bridge or voltage divider. This method of operation involves connecting the resistive element in a bridge circuit, as shown in Figure 1. A voltage is applied across the resistors, and the output voltage is proportional to the resistance of the resistor.

The 3290W-1-103 trimpot works on the same principle as other trimpots. It consists of a resistive element, which is adjustable to vary the output voltage. The output voltage is adjusted by rotating the shaft of the trimpot. This rotation varies the resistance of the trimpot and thus changes the output voltage. The 3290W-1-103 is adjustable over a range of between 0 and 10 volts.

Conclusion

The 3290W-1-103 trimpot is a highly accurate and reliable device for adjusting the resistance and output voltage in RF circuits. It is widely used in communications equipment for its excellent temperature stability and accuracy. The trimpot is adjustable over a range of 0 to 10 volts by simply rotating the shaft.