What is the current limiting resistor and what function it performs

In this article I will tell you about the so-called current limiting resistor (some call it "burst") and about the purposes for which it is used in modern (and not only) schemes. So, let's get started.

If you open, for example, a power supply, you can see here is an element which has successfully replaced a fuse in English referred to as Fuse Resistor, Which literally means "fuse-resistor".

Yet some experts loudly called discontinuous product resistors.

This element has a specific resistance, and in most cases in the resistor circuit performs protective functions of the rectifier bridge of the inrush current during charging of the electrolytic capacitor. And if we say, roughly, that it is nothing like a normal fuse.

During the short-circuit current increases in tens (or even hundreds) of times and in order to avoid probability of emission of the fragments to break such a resistor is placed in a bag of shrink tube.

In fact, this combination of several functions in one product is dictated by the total reduction in production costs (with which our distinguished colleague from China has successfully cope). After all, many of us are not ready to lay out a tidy sum for a quality product and we pay money for a product that is cheaper, and preferably with a large skidochku.

If you are out of order is a resistor on the board, then replace it with the same desirable to maintain the operating parameters of the circuit.

Benefit if your city has more or less decent store-type "Young Technician", then it simply must be a variety of resistors.

If you have the same situation as me (a small town, and such shops is not in principle), the online stores to help you. For example, I buy most of the details here.

conclusion

That's all I wanted to tell you about a discontinuous resistor. If you liked the material, then with your thumbs up and thank you that you have read to the end!