67WR2KLFTB

Trimmer Potentiometers

The 67WR2KLFTB is a trimmer potentiometer and is a type of variable resistor used to adjust the output power or signal of a system. It is also known as a trimmer resistor or a trimpot. It works by varying the resistance along a linear or rotary path.

The potentiometers achieve this by putting a resistive element between two end terminals. The resistive element can be a wire, film or other materials. The resistance can be adjusted either by moving a sliding contact along the resistive element, in a linear fashion, or by rotating a spindle along the resistive element, in a rotary fashion. The trimmer can also act as a variable capacitance, using a dielectric material as the resistive element.

Application Field

Trimmer potentiometers are used for a variety of applications in industrial, commercial and consumer electronics. They are used to adjust the power output of an appliance, set the gains of amplifiers, regulate the speed of a motor, adjust the sensitivity of a sensor, and so on. In consumer electronics, they are used to adjust the color on a television, regulate the brightness, contrast and other picture settings, adjust the tone of an audio amplifier, and so on.

Working Principle

The working principle of a trimmer potentiometer depends on the type of design used. In linear type designs, the resistor is connected in series to a linear path between the two end terminals. When a voltage is applied to the two ends, resistance along the linear path is varied, resulting in different levels of resistance between the two end terminals. In rotary type designs, the resistor is made in the form of a half circle, with the two end terminals connecting the two sides of the half circle. When a voltage is applied to the two ends, the variable resistor is adjusted by rotating it along the half circle.

In both cases, the resistance is adjusted by applying either mechanical force or electrical signal. The mechanical force can be applied by rotating a selector knob or sliding a selector arm, while an electrical signal can be applied by passing a DC or AC current through the two end terminals. The level of resistance between the two terminals is therefore varied according to the application. These variable resistors are often used in conjunction with other components to achieve the desired results.

Trimmer potentiometers are widely used in electronic applications and are available in a variety of designs and sizes. They are used in almost every electronic device and often in combination with other components, such as transistors and capacitors, to create complex circuits.