D25K50RE

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Adjustable Power Resistor is a component that is often found in a variety of applications. They are typically used to reduce or control current, and maintain a steady voltage across an electrical circuit. The D25K50RE is a commonly used adjustable power resistor, which is a non-inductive type, featuring high inrush current tolerance. This article will discuss the application field and working principle of D25K50RE.

Application Field

In general, the D25K50RE is an ideal device to handle large inrush currents, such as those encountered with capacitor charging. In addition, it can also be used in a variety of applications, such as distributed power systems, where they are typically used to reduce the current consumed in the system, or control the current levels during start-up. Furthermore, this device can also be used as a variable load resistor, where its resistance can be adjusted to regulate the power delivered to different components of the system.

Working Principle

The operating principle behind the D25K50RE is twofold. Firstly, it has an adjustable wiper contact, which when adjusted to different positions on the resistor, drastically affects the resistance of the device. By adjusting the wiper contact, the resistor\'s resistance can be rapidly and precisely set between 10 mΩ and 50 kΩ. Secondly, the device has two predetermined safety resistors, which come into effect when the wiper arm falls off its track. When the wiper contact is not adjusted and the arm is not on the track, the device operates as a fixed resistor with a value of 1000Ω.

Conclusion

The D25K50RE is an indispensible component for various applications related to distributed power systems, capacitor charging and current regulation. Its adjustable working principle enables users to control current levels by setting the resistors resistance value, while its safety design ensures that the device operates safely when the wiper arm is not in the desired position.

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