Fast Facts About Power Resistors
The use of electronics implies the use of power resistors. While there are some electronics that only require low power resistors, there are those that require high power resistors. For low power resistors, less than a watt is needed. One watt or more, however, is what you will need with high power resistors. For purposes of power conversion, power supplies, heaters, dynamic breaks, and amplifiers, high power resistors are utilized. Below are some things you need to know about power resistors before buying some.
To start, what can you expect from power resistors? If you say power resistors, you are referring to an electrical component that is composed of two terminals. With these terminals, the production of voltage that is proportional to the electrical current is what you can expect from them. Resistor is the element that gets to pass through this electrical current. From the circuit that is given, voltage is the power that causes current to flow through it. Meanwhile, what controls the current flow will be the resistance that is measured in Ohms. The use of power resistors helps to control the flow of these currents found in your electronic devices. 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.
There are basically a number of options when it comes to the use of power resistors. 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. However, carbon resistors are not capable of dissolving a lot of power and in producing resistance tolerances at a minimum. 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. If they see it fit that you can use a carbon resistor, then you will have a less expensive option.
However, if you are after power resistors with better tolerances, then a great option for you will be metal film or oxide resistors. One of the most commonly used power resistors of this type is the wirewound resistor that is better at dissipating larger levels of power than other power resistors. In addition, you can expect better and easier temperature control capabilities with these wirewound resistors. If precision is a requirement in your electronic device, then wirewound resistor is the one for you. It is no wonder why when you look at the latest circuits, they are made of these wirewound resistors.
Whichever power resistor you choose, just see to it that you take note of the required top voltage rating, power rating, tolerance, and resistance of the power resistor of your choice.