4
CHAPTER
Direct-Current Circuit Basics
IN THIS CHAPTER, YOU’LL LEARN MORE ABOUT CIRCUIT DIAGRAMS, WHICH ENGINEERS AND TECHnicians call schematic diagrams, or simply schematics, because they detail the schemes for designing and assembling circuits. You’ll also learn more about how current, voltage, resistance, and power interact in simple DC circuits.
Schematic Symbols
When we want to denote an electrical conductor such as a wire, we draw a straight, solid line either horizontally across, or vertically up and down, the page. We can “turn a corner” when we draw a conductor line, but we should strive to minimize the total number of “corners” in a diagram. By following this convention, we can keep schematics neat and ensure that they’re easy for ...
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