EVM-3SSW50B22

Trimmer Potentiometers: EVM-3SSW50B22 Application Field and Working Principle

Trimmer potentiometers are a type of variable resistor which consists of a spindle with a rotating contact, mounted on three terminals. They are mainly used where an adjustable potentiometer is required. The EVM-3SSW50B22 is one such trimmer potentiometer, which is designed for use in high accuracy, wide range applications. In this article we will explore the application field and working principle of this device.

Application Field

The EVM-3SSW50B22 trimmer potentiometer is a 3-terminal version of the standard single shaft trim pot. It is widely used in a variety of precision settings, such as level measurement, alarms and signal processing components. The adjustable trimmer mechanism enables a range of voltages and signals to be set, calibrated and maintained over a wide range. This type of potentiometer is usually found in AC power control circuits, power supplies, portable audio systems, variable-speed motors and electronic level measurement equipment. It is also used in frequency synthesizers, AD and DA converters, signal transducers and frequency control networks.

Working Principle

The working principle of the EVM-3SSW50B22 trimmer potentiometer is based on the principle of electrical resistance. The resistance of a potentiometer is determined by the position of the contact between the spindle and the resistive element which is mounted on the three terminals. When the contact moves away from the central point, the total electrical resistance increases. The total resistance can be varied by rotating the spindle or by adjusting the screw which acts as a mechanical switch. The total resistance of the device also increases when the voltage applied to the terminal is increased. The resistance of a potentiometer can thus be adjusted in order to obtain the desired setting.

Conclusion

The EVM-3SSW50B22 trimmer potentiometer is a widely used precision setting device. It is mainly used in AC power control circuits, power supplies, portable audio systems, variable-speed motors and electronic level measurement equipment. The resistance of a potentiometer is determined by the position of the contact between the spindle and the resistive element which is mounted on the three terminals. The resistance of a potentiometer can thus be adjusted in order to obtain the desired setting.