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The Basics of Power Resistors

Power resistors are essential for a wide array of electrical applications. If some electronics applications require low power resistors, you also have those that need high power resistors. For low power resistors, less than a watt is needed. On the other hand, with high power resistors, you will be needing one watt or more. The use of high power resistors applies to heaters, amplifiers, power conversion, dynamic brakes, and power supplies. In this article, you will be reading about some fast facts about power resistors.

So, what are power resistors? The first thing that you need to know about power resistors is that they come with two terminals as an electrical component. With these terminals, the production of voltage that is proportional to the electrical current is what you can expect from them. You refer the what passes through this current as the resistor. The power that enables the current to flow through the circuit that is given is what you refer to as the voltage. On the other hand, the one that is responsible in controlling the current flow is resistance that can be measured in Ohms. Power resistors help to control the flow of current. To be sure that any part or component of your electronic device will be able to function properly, there must be proper regulation of the current flow.

Now, when it comes to these power resistors, you can choose from different types of them. For example, one type of power resistor is the carbon resistor where a bar or rod of carbon material will be used to have the leads attached to it. And yet, carbon resistors are not able to produce very minimal resistance tolerances as well as be able to dissolve a lot of power. With the kind of purpose you have with your electronics and the use of these power resistors, it would be better that you talk with the power resistors company about what is the best choice for you. When after assessing your needs a carbon resistor will do, you can save a good amount of your money.

You might want to consider getting power resistors, though, that are made of metal films or oxides if you are looking for something that will offer you better tolerances. For this type of resistor, the most common is the wirewound resistor that is capable of dissipating larger power levels compared with other power resistors. Moreover, such wirewound resistors are great at controlling temperatures more easily. If precision is a requirement in your electronic device, then wirewound resistor is the one for you. This is actually the kind of power resistor that is being used among modern-day circuits.

No matter what kind of power resistor you will go for, you just have to make sure to keep track of its resistance, tolerance, top voltage rating, and power rating.

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