Adjustable resistors are currently classified in the electronic market in many specifications, especially for some small specifications in the use of resistors need to pay attention to the details of many. If it is not used properly, it will easily lead to some problems. So for some of the adjustable power resistor use of knowledge I think it is necessary to understand, and today I will be the next small series for you to explain the use of small adjustable resistance notes common sense.

Cautions for use of miniature adjustable resistors

One
Because the adjustable power resistor is generally small in size, in the installation process, we should pay attention to not too much force to squeeze its adjustable resistance lead pin, otherwise it is easy to cause breakage or bending. So it will directly affect the use of resistors. So please pay attention to this point in operation and installation.

Two
About the adjustable variable resistor of different specifications of the model resistance is different, so generally for the operation of replacement, different specifications of the resistance can not be used casually. In order to avoid the equipment line compatible with resistance value too large or too small resistance, so it is very tolerant to damage resistance here.

Three
Adjustable resistor in general use, it should be noted that the line power and current should not exceed the maximum resistance to withstand the rated power. When the rated power current is allowed to overload, it will lead to the irreversible increase or open circuit of the resistance at both ends, so it is possible to lead to resistance breakdown, so the use of adjustable variable resistor must be limited to the power current or voltage applied in the line.

Four
Usually in the use of adjustable power resistor, the main function of its working temperature is to conduct heat dissipation through the lead wire, but it will also cause the temperature of the two ends of the lead wire is lower than the temperature in the middle of the resistance body, that is to say, for general low resistance resistance, if the contact resistance between the cap and the resistance film is too low. Large, may appear in the cap of the power dissipation and current density of the phenomenon of high working temperature can not heat, then ultimately lead to the possibility of resistance burnout. Therefore, when the resistance is not used, we must ensure that the good heat dissipation performance is good.

Five
Whether the adjustable variable resistor is used or stored, we should pay attention to whether the pin should be scratched or bent. This is the performance that will cause resistance. And in the storage of resistance, we should pay attention to the storage time not too long. Otherwise, the elements inside the resistance will be affected by the air and lead to oxidation, so it will also affect the use of resistance performance. So the general storage time for resistance is three months to six months.