308N10K

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Rotary Potentiometers, Rheostats

The 308N10K is a rotary potentiometer, rheostat model that is primarily used in audio dividing networks, level controls, pilots, and other control applications. It features a highly reliable Monolithic Platinum element that is designed and tested for optimum performance and durability. This model also features a low noise level compatible with various systems, and can handle up to 10KA of linear power at 10KA resistance levels. The 308N10K is designed with a dust and corrosion resistant nickel barrier layer that helps protect the contact points.

Rotary Potentiometers are designed to control the flow of electricity from one point to another. A rheostat works by changing the resistance between two points of an electrical circuit. The resistance is adjustable, and so the amount of current passing through the circuit can be controlled. The universal symbol for a rotary potentiometer is the letter ‘R’. A rheostat is typically made up of three terminals, one for power input, one for power output, and one for the variable resistance.

The 308N10K operates on a four-wire system, with a direct variable output. This model features an input impedance of 10 KΩ, a linear taper of 10KA, and a maximum linear resistance of 10KA. This model is designed to withstand a maximum operating temperature of 85 °C, and is also RoHS compliant. The 308N10K has a temperature coefficient of 0.02%/°C, and a power rating of 0.5W.

The working principle of the 308N10K can be broken down into four steps. First, a rotary potentiometer is used to adjust a voltage from its maximum to its minimum level. This is done by rotating the knob on the device. When the knob is rotated, the resistance of the circuit changes accordingly, which changes the output voltage level. Second, a resistance element is located in the center of the potentiometer. The resistance value of this element will be changed when the knob is rotated. Third, a non-conductive spacer is located between the resistance element and the power input. This ensures the electrical insulation between the power and the resistance element. The fourth and final step is the contact point. This is what actually completes the electrical circuit between the power input and the output.

The 308N10K is extremely reliable and durable, making it an ideal choice for various control applications. Thanks to its low noise output and robust construction, it performs consistently even in difficult environments. With its combination of features and working principle, the 308N10K is set to meet the requirements of rigorous industrial applications.

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