What looks like a battery, has two terminals like a battery and stores electrons like a battery? Capacitors can store and release electrical energy, but don't replenish their supply. How do capacitors work, and what tools rely on them? See more »

Electric motors are inside all kinds of ordinary devices, using a power source to make motion. So what makes the motor go 'round? See more »

The capacitor plays a crucial role in electronics -- it stores electrons for when they're needed most, dumping a huge charge instead of a steady flow. How does it do it? See more »

The circuit breaker is one of the most important safety mechanisms in your home. Without it, the risk of fire would skyrocket. Learn how a circuit breaker keeps your home's electricity in check. See more »

The brushless motor is more precise than a regular electric motor and it's also a great deal more efficient. Learn all about brushless motors and how the invention of transistors led to their development. See more »

You might be surprised to find out just how much work is done by electric motors. They're everywhere! You'll find them in your car, your kitchen, bathroom, office... Find out how electric motors get stuff moving. See more »

Would you like to be able to build your own digital devices? Logic gates are the basis of digital electronics. Find out what these gates do and how you can use them to start building your own devices. See more »

An inductor is little more than a coil of wire. Sound simple? Well, it is -- but that coil of wire can do some pretty cool things. Learn all about inductors and what they're used for. See more »

Light emitting diodes form numbers on digital clocks, send data from remote controls, light up traffic signals, illuminate watches -- the simple genius of the design makes it infinitely applicable. See more »

Most modern electronic devices (TVs, appliances, power tools) contain an embedded microcontroller. It's basically a dedicated computer. Find out how these devices work and experiment with one on your own. See more »