We can see how circuits work ... circuit symbols for a two-cell battery and a three-cell battery. Batteries can also be used to power electric vehicles, or to store energy from solar panels ...

It's wires that connect to different electrical components, like a light bulb, a switch, and a battery. JAMES: Yeah, there are actually two types of circuits. We have series circuits and parallel ...

Using a PIC16F628A, he constructs a test circuit which allows him to demonstrate the power savings gained by using sleep mode rather than the microcontroller’s built-in delay function.