D50K250

Adjustable Power Resistor

Adjustable power resistors are a type of device used to precisely control the flow of electrical current in a circuit. The term adjustable is used because the value of the inner resistance can be adjusted, to accurately control the amount of current passing through the device.

A D50K250 is a type of adjustable power resistor that is designed to operate at up to 250 watts. It utilizes a precision construction with a resistor core comprised of silica-filled ceramic to help maintain an accurate and uniform resistance value throughout its useful life.

Application Field

The D50K250 can be used in a wide variety of different applications, including as a heating element in commercial cigarettes, as a precision current regulator in home and commercial electronics, and as a surge protection device in automotive systems.

It is also used in medical devices, such as dialysis machines, heat sensing instruments, medical imagery, and medical laser systems. The ability of the D50K250 to adjust the current passing through the device allows it to precisely control the amount of current passing through medical equipment, ensuring accuracy and safety.

Working Principle

At the heart of the D50K250 is its precision resistor core. This core consists of a series of composed rings made of silica-filled ceramic, which is designed to uniformly distribute the electrical current passing through it. As the resistor core is exposed to more electrical current, the alloy coating of the rings acts as a gate, allowing the current to flow more freely.

The rings are designed to have specific values of resistance, depending on the application and the exact characteristics of the circuit it is placed in. The resistance value of each ring can be altered by adjusting the temperature of the resistor. When the temperature is increased, the resistance of the rings decreases, allowing more current to pass through the device.

By adjusting the temperature of the resistor core, the value of the resistor can be precisely tuned. This allows the device to precisely control the flow of electrical current through the circuit, providing a safe and reliable control of both current and voltage.

Conclusion

The D50K250 is an adjustable power resistor designed to provide precise control of current in circuits that operate up to 250 watts. It utilizes a precision resistor core of silica-filled ceramic rings, which can be adjusted to a precise resistance value by varying the temperature of the device. This allows the device to precisely control the currents flowing through the circuit, providing a safe and reliable method of regulation for both current and voltage.