D25K15K

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Adjustable power resistors, also known as trimmer resistors, are resistors with adjustable output resistance. The resistance value can be adjusted within a certain range. The adjustable power resistor has a wide application range and is widely used in the adjustment and circuit calibration of many electronic circuits. The adjustable resistor D25K15K is an adjustable power resistor, and its application field and working principle are introduced in this document.

The adjustable power resistor D25K15K is mainly used in various fields such as home appliances, communication, automotive, medical, power supply, industrial control, etc. With regard to specific application cases, it works well in controlling and adjusting the current in the circuit, setting the voltage limiting input of the power, and providing the bias or the feedback components to the amplifier. In addition, it is also widely used as the varistor for anti-surge protection, and in the case of reference voltage generation and power supply adjustment.

In terms of the structure of D25K15K, the adjustment mechanism of the resistor mainly consists of a knob, a fixed part, a sliding contact, a pressure spring and a reset spring. The rotating knob will rotate on the head of the varistor, and thus the sliding contact will move in parallel with the shaft, which will consequently affect the resistance of the resistor. The reset spring is used to drive the sliding contact to the reset position in order to realize automatic reset and make the resistor reset after off-load.

Generally, the adjustable effective resistance range of D25K15K is from 15kΩ to 35kΩ, with the working voltage range of 500V and the rated power of 12 watts. Besides, its maximum current and maximum voltage are 10A and 600V, respectively. Its resistance is proportional and adjustable with accuracy of 0.5%. In addition, its anti-surge capability is between 4V and 12V.

In the application of circuit stabilization, after the adjusting load power of D25K15K is connected to the circuit, power needs to be supplied to drive the output of the adjustable resistor; the output current and voltage are adjusted through the knob; and then the activated current flows through the resistor and the contact of the sliding contact at the same time. Therefore, two closed loops are formed. The resistance value of the adjustable resistor changed by the knob will drive the jitter of the loop current, and in doing so, the stability of the whole circuit will be regulated.

In a nutshell, the adjustable power resistor D25K15K has a wide range of applications and good performance, and it also has a simple and reliable structure. Generally it is used in circuit adjustment and is an effective replacement for conventional resistors.

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