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Trimmer Potentiometers

SM4ETA102 application field and working principle

SM4ETA102 is a trimmer potentiometer produced by Panasonic. It is mainly used to resistive or capacitive circuits for precision voltage adjustment. It is commonly used in various electronic control circuits, such as in controlling the sound volume, transmission frequency, or various time constants.

The SM4ETA102 trimmer potentiometer has a symmetrical bipolar adjustment, and a special linearity adjustment designed for precision signal control applications. Its overall functions include voltage adjustment, input impedence adjustment, and more.

The adjustable range of the SM4ETA102 is 10-200 ohm. The control parameters can be adjusted by the adjustment knob. It has long life because of its reliable construction, and it is highly resistant to dust, and has a waterproof performance. The SM4ETA102 is also a low power consumption device with high temperature resistance of up to 125 degrees Celsius.

The SM4ETA102 is based on a 3-terminal resistive element, and the resistance value is controlled by a movable contact point, with the wiper connected to the wiper terminal. When the movable end moves, the resistance value between the two ends will change, and the voltage applied to the wiper terminal will also change. This is how the trimmer potentiometer can adjust the voltage. This device can also be used as a variable resistor when the voltage supply is not needed.

In summary, the SM4ETA102 is a trimmer potentiometer produced by Panasonic, suitable for adjusting the resistive and capacitive circuits for precision voltage adjustment, and widely used in various electronic circuits. It has a symmetrical bipolar adjustment and a special linearity adjustment designed for precision signal control, with adjustable range of 10-200Ω, high temperature resistance and good waterproof performance.

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