The potentiometer is an adjustable electronic component, and its main role in the circuit is as follows:
1. <br> <br> as a voltage divider is a potentiometer continuously adjustable resistors, when the crown adjustment potentiometer or a slide lever, the movable contact slides on the resistor. At this time, an output voltage which is related to the potentiometer applied voltage and the movable arm angle or stroke can be obtained at the output end of the potentiometer.
2. When used as a rheostat rheostat <br> <br> potentiometer is used, it should be connected to both ends of the device, so that the flower potentiometer stroke range, the resistance value can be obtained in a smooth, continuous variation.
3. <br> <br> used when the potential of the current controller as a current controller, wherein a selected current output must be sliding contact terminations.
1. <br> <br> as a voltage divider is a potentiometer continuously adjustable resistors, when the crown adjustment potentiometer or a slide lever, the movable contact slides on the resistor. At this time, an output voltage which is related to the potentiometer applied voltage and the movable arm angle or stroke can be obtained at the output end of the potentiometer.
2. When used as a rheostat rheostat <br> <br> potentiometer is used, it should be connected to both ends of the device, so that the flower potentiometer stroke range, the resistance value can be obtained in a smooth, continuous variation.
3. <br> <br> used when the potential of the current controller as a current controller, wherein a selected current output must be sliding contact terminations.
1.itis one of the filter standards (42CFR84) for respirator type masks prescribed by the US
National Institute for Occupational Safety and Health in 1995.
2.It is recommended for serious communicable diseases such as tuberculosis, SARS, and influenza.
3.The "N" stands for "Not resistant to oil," and the evaluation requirements for masks stricter
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