Electronic Components Resistors

Written by Michael O'Brien
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Electronic components resistors are what we would consider a passive electronic component. Like the name implies, they are designed to resist the flow of power. Doing so allows a circuit to control power flow. Let's take a closer look at how this works and how electronic components resistors are designed.

The Anatomy of Electronic Components Resistors

You may have seen electronic components resistors before and not known what you were looking at. Ever look at the inside of a computer or radio? Did you ever notice that little cylindrical shaped component with little tiny wires coming out of the front and back of it? That's a resistor.

Electrical current flows into the resistor from the wire on one end and back out again through the other. The resistor acts as a kind of filter, allowing a smaller amount of current back out than what was originally sent into it. This is how resistors control electrical current by restricting the flow of power to components that need less energy, or that could be burned out and overloaded by receiving too much power.

Most resistor electronic components are of a fixed nature in that the amount of power they resist remains the same all the time. Some types of resistors, however, allow the flow of current to be adjusted. You probably use such resistors every day. They can be found in mixing consoles and any audio generating device that allows you to adjust the volume, such as radios and televisions. You are controlling the flow of electrical current to the speakers to make the sound louder or quieter. Such resistors act as a kind of power faucet, allowing you to control the flow of that power with the volume knob the same way you control the flow of water with a faucet handle.

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