3223J-1-202E

What Are Trimmer Potentiometers?

Trimmer potentiometers, also known as trimmers or trimpots, are adjustable, three-terminal resistors used for the precision adjustment of a variety of electronic circuits. The 3223J-1-202E series trimmer is a miniature side adjust trimmer designed for mounting on Printed Circuit Boards (PCB). It can easily be adjusted with a standard screwdriver and is typically used when the adjustment is more frequent and is not usually re-adjusted afterwards.

Applications of 3223J-1-202E Trimmer Potentiometers

3223J-1-202E trimmers are available with a range of resistance values and power ratings, making them suitable for a range of different applications. These include, but are not limited to:

• Precision voltage divider
• Adjustable threshold detection
• Signal gating
• Current limiting circuit
• Linearization of non-linear signal
• Flow control
• Power supply regulation
• Position control
• Temperature control

The 3223J-1-202E trimmer can also be used to set reference voltage levels, provide frequency trimming of oscillators and filter circuits, adjust reactance of LC circuits and provide gain control in amplifier circuits.

Working Principles of 3223J-1-202E Trimmer Potentiometers

3223J-1-202E trimmer potentiometers are precision resistors in which the resistance value can be adjusted precisely via a side adjustment screw that moves a slider along a track of thick-film resistive elements. When turned, the slider contacts a resistive element, forming a voltage divider circuit and thus varying the resistance in the circuit.

This type of trimmer also incorporates a calibration facility that allows the exact adjustment of the resistance value to be set. It features three connection pins – one for the common ground, one for the wiper (the moving connection point) and a third which acts as a adjustable connection point. By setting the wiper to the correct position and varying the input voltage, the desired resistance value can be achieved.

Conclusion

The 3223J-1-202E trimmer potentiometer is a versatile, precision resistor that can be used in a wide variety of applications, allowing the adjustment of precision voltage dividers and other circuits. Its calibration facility also ensures the correct resistance value is achieved for any given application.