D25K1K0E

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Adjustable Power Resistor

Adjustable power resistors are resistors with an adjustable resistance to offer maximum flexibility for a range of applications in industries as diverse as telecommunications, lighting, automotive, energy measurement and medical instrumentation. This type of resistor is specifically designed for applications where the same resistor type and performance is required, but with a few varying values due to different operating conditions and other design considerations.

The adjustable power resistor, also known as the D25K1K0E, is an NTC (negative temperature coefficient) type thermistor, which is electromechanically adjustable and has the option of a manual or automatic adjustment to provide the exact resistance desired. The power resistor regulates the current that passes through it, enabling the system to control the voltage. In addition, the power resistor can limit the time that current can flow through it to prevent the possibility of electric arcing. This feature is useful in applications where the power supply needs to be limited to protect sensitive components.

The D25K1K0E is typically used in thermostatic control devices where the temperature needs to be maintained at a given level. It is also used in ac motor control for varying the speed of the motor based on the voltage it receives. Other common applications include lighting control circuits and electronic regulators. In addition, this power resistor can be used in industrial applications for controlling currents and measuring current flow.

The working principle of the adjustable power resistor is based on the variation of the resistance with respect to the temperature. When the ambient temperature increases, the contact point between the contacts starts to move towards the resistive layer, reducing the resistance value. As the temperature continues to rise, the contact point moves further towards the resistive layer, decreasing the resistance even more.

The adjustable power resistor is composed of three components: a resistor body, a contact element, and a temperature sensing probe. The body of the adjustable power resistor is made of ceramic and it has a thin film of resistive material covering it. The contact element is a metal tip made out of a specific material that corresponds to the resistance that is desired. Finally, the temperature sensing probe senses any changes in the temperature and adjusts the resistance accordingly.

The working of the D25K1K0E can be easily explained. When the required temperature is reached, the resistor starts to move towards the contact point blocking the electricity and decreasing the resistance. The amount of resistance, and also the time the switch takes to be triggered can be adjusted according to the desired temperature. The higher the temperature, the less resistance will be applied.

Adjustable power resistors have become an invaluable part of many industries for regulating the current by changing the resistance according to the circumstance. They can be found in many automotive applications such as headlights, fuel and oil pumps, and water pumps. In addition, they can also be used in battery chargers, measuring equipments and many other applications requiring accurate current regulation.

The D25K1K0E is a very reliable device and is capable of providing excellent performance in a number of applications. It is easy to assemble and its design is flexible enough to accommodate different operating conditions. It is also cost effective and widely available.

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