308NPC100K

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Rotary Potentiometers and Rheostats are a widely used form of variable resistor in many analog electronic circuits and devices. The 308NPC100K is an example of such a component, and it’s application field and working principle are unique and significant.

The 308NPC100K is a single-turn potentiometer, made from cermet, with a rotary torque of 15mNm nominal. The maximum resistance values it can offer is 100K Ω, and the amount of adjustment torque is 5gf.cm. It has a linear taper, a temperature coefficient of resistance of ±500ppm/°C, and a temperature range of -40°C to +85°C. The electrical noise of the component is 5mV.

The application field of the 308NPC100K can vary greatly, but its most common use is in audio equipment, light dimmers and in industrial controls. The component can be used for volume, pan, and balance control, as well as in a variety of automotive applications. Specifically, the 308NPC100K has a 10K Ω total resistance and 10K Ω internal resistance, making it ideal for radio signal attenuation and modulation adjustment.

The working principle of the 308NPC100K is based on a voltage that varying with resistive ohms. When the knob is turned, the resistance across the resistor changes linearly with the position of the knob. This change in resistance produces an effective resistance change within the circuit, which then produces a voltage change in the signal, as this voltage varies, the sound or light being controlled is changed by the level of this voltage.

The most important feature of the 308NPC100K is its low temperature coefficient of resistance. This ensures that changes in resistance remain consistent when used in different temperature environments. The component also has a low electrical noise, which makes it resistant to noise interference, and, as already mentioned, it has a wide range of applications.

In summary, the 308NPC100K is a popular and versatile single-turn potentiometer, with a wide range of applications, and a unique working principle. It is resistant to noise interference and can withstand a large range of temperatures and external conditions, making it an ideal choice in many analog electronic circuits and devices.

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