I believe everyone knows that in the process of using the circuit, it is necessary to distinguish the positive and negative poles to effectively ensure the normal use of the circuit. However, the resistor is a very common electronic component we use in the circuit, and it can mainly play a role in limiting the current size of the branch connected to it. So do resistors have positive and negative poles?

Resistors are positive and negative.

Resistors are non-polar, and theoretically they can be used as long as the resistance and power match. Generally speaking, there is only the difference between the resistance value and the package, and there is no difference in the direction.

In other ways, a constant current source or a constant voltage source can be used to apply a voltage or current to the resistor, and at the same time, the voltage or current flowing through it can be measured, and the resistance value of the resistor can be calculated by Ohm's law.

Of course, in practical engineering, there are limitations such as volume, working temperature, etc., so that resistance and power matching can not be universal. If the model is exactly the same, then there is no problem. Some resistors have small models under large models, and there may be small differences in various parameters. At this time, it is necessary to decide whether to replace them according to the actual situation.

Through the introduction of the above content, I believe you already know that the resistance is not divided into positive and negative. In general, most of the current resistors do not need to distinguish between positive and negative electrodes, so everyone can be bold when using them without worrying about the problem of positive and negative electrodes.