Chapter 2

Working with Resistors

IN THIS CHAPTER

check Understanding and measuring resistance

check Calculating resistance with Ohm’s law

check Determining resistor values and tolerance

check Working with resistors in series, parallel, and combination

check Creating a voltage-divider circuit

check Looking at how a potentiometer varies resistance

My favorite science fiction villains are the Borg from Star Trek: The Next Generation. They had a saying: “Resistance is futile.”

In the Star Trek world, it turned out that resistance against the Borg wasn’t futile. Picard and the rest of the crew of the Enterprise resisted and eventually triumphed over the Borg.

In the electronics world, resistance is not futile. In fact, resistance can be very useful. Without resistance, electronics would not be possible. Electronics is all about manipulating the flow of current, and one of the most basic ways to manipulate current is to reduce ...

Get Electronics All-in-One For Dummies, 2nd Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.