All Tutorials

We've discussed a lot about LEDs like how it works in a semiconductor level, its pros and cons, and how an individual LED can be dimmed through constant current reduction (CCR) or ...

Ask an Electrical Engineer is a series where frequently asked questions from non-engineers will be answered by an engineer. For this video, our main topic is all about LEDs (Light ...

Why do we need a resistor for an LED? Once you pass the forward voltage, a slight increase in voltage makes a huge increase in current. You don’t wanna blow things up!

LEDs are better than other light sources in most applications. While they are more efficient, there are a lot more things to consider when buying a lightbulb than just how much ...

In our previous tutorials, we’ve discussed the basics of semiconductors, band gap, current carriers, and its classification. We learned that in order for a semiconductor material ...

Before we can get too deep into voltage dividers, it is essential to have a good understanding of what happens with Parallel and Series Resistors. Once you understand how a ...

Resistors are the most common electronics component in the world. They’re used in many forms of circuits as voltage dividers, to keep current levels under control with things like ...

In normal conversation, power is often interchanged with a lot of similar but actually different words - energy is a big one. Power is the amount of energy that is expended over a ...

I have to admit, I’m biased. I think LEDs are awesome. But, really, the reason I’m biased and love them so much is because they’re just so cool. I’ve found that as I replaced the ...

Every circuit has a power source, or else it won’t do much. While the actual power source can vary wildly, they all fit under the two general titles of “voltage source” or ...

Potentiometers. Pots. Trimmers. Rheostats. If you’ve done very much with electronics, you’ve heard at least a couple of these words. Maybe you’ve heard them interchangeably and ...

If we recall some basic topics in chemistry, we’ll remember that all atoms consist of neutrons, protons, and electrons, except for a normal hydrogen atom which doesn’t have a ...

One would think that, if you need a specific resistance, you would find a resistor of that resistance and you’d never have to worry about putting multiple resistors together. The ...

Before semiconductor devices existed, vacuum tubes were the only devices available for signal amplification, switching, and other applications. Though vacuum tubes are functional, ...

Multimeters are used by anyone who deals with electricity. They’re very versatile and can be used to characterize an embedded system or troubleshoot a non-functioning lightbulb in ...