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Electronics For Dummies, 2nd Edition by Gordon McComb, Cathleen Shamieh

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Chapter 12

Measuring and Analyzing Circuits

In This Chapter

arrow Introducing your new best friend: your multimeter

arrow Using a multimeter to measure all kinds of things

arrow Setting up and calibrating your multimeter

arrow Making sure electronic components are working properly

arrow Probing around your circuits

arrow Identifying the cause of circuit problems

Your excitement builds as you put the finishing touches on your circuit. With close friends standing beside you, eager to witness the first of your ingenious electronics exploits, you hold your breath as you flip the power switch, and . . .

Nothing. At least, nothing at first. Then, disappointment, disillusionment, and disbelief as your friends — and your confidence — slowly retreat from the scene.

What could possibly be wrong? you ask yourself. Then you notice it: There’s smoke emanating from what used to be a resistor. And then you realize you used a 10 Ω

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