1.6 Passive components

I declare: solidlikelyshaky

1. Read a resistor’s value from the colour code and SMD marking, then verify it.
2. Choose a capacitor by capacitance, voltage and type (ceramic, electrolytic, film), and say which doesn’t belong where.
3. Explain what an inductor does to a changing current, and why a flyback diode goes with a relay or a motor.
4. Name what kills each component: overvoltage, overheating, polarity, the age of an electrolytic.
5. Measure a capacitor and an inductor with the right instrument and compare to the marking.
6. Recognize and measure the variable components: potentiometer, thermistor (NTC, the one in packs), photoresistor, varistor; say what each makes vary.
7. Diagnosis: a bulging electrolytic on a power supply, say what it was doing there, what its failure causes, and how to replace it (value, voltage, polarity).