SM31B502

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Trimmer Potentiometers offer customizing precision for electronic circuits. A SM31B502 trimmer is a miniature type of potentiometer, also known as a trim pot, suitable for applications requiring a reliable adjustment or a preset resistance setting in a circuit. The SM31B502 is typically used where a small adjustment range is necessary, making it ideal for commercial, industrial, and professional equipment.

The SM31B502 is a single-turn, wire-wound trimmer. It has a 50.0 ohm resistance value with a maximum power rating of 1.0 watt at +70°C and a life expectancy of up to 15,000 cycles. The trim pot is available in a standard 2-pin or 9-pin form factor. It is constructed with a ceramic case and an adjustable screw shaft. The ceramic case is designed to protect the internal electrical components from adverse environmental conditions. The adjustable screw shaft allows for precise current or voltage adjustments within the limited adjustment range.

The SM31B502 is ideal for adjustable gain control, adjustment of amplifier equalization, and fine adjustment of oscillator frequencies. It is commonly used in consumer applications such as microphone systems, volume control, signal monitoring, and media players. Industrial applications include laboratory equipment, audio and video systems, instrumentation, and automotive systems.

The working principle of the SM31B502 trimmer potentiometer is simple. The adjustable screw on the trimmer is connected to a resistance path arranged in a circle. The screw moves along the circuit, adjusting the resistance of the circuit accordingly. When adjusting the potentiometer, users can observe the effect of the adjustment from the reading of a voltmeter connected to the potentiometer. When the resistance reaches an appropriate value, the adjustment is completed.

In summary, the SM31B502 is a miniature wire-wound trimmer potentiometer ideal for applications requiring precise adjustments for volume control, gain control, and oscillator frequencies. The adjustable screw on the trimmer is connected to a resistance path that is arranged in a circle, allowing users to adjust the resistance value of the circuit accordingly.

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