Chapter 3 More Components and Semiconductors & Lesson 8 Capacitors and Push Buttons

Chapter Chapter 3 More Components and Semiconductors

Electronic Circuits for the Evil Genius Second Edition 64 Lessons with Projects
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Electronic Circuits for the Evil Genius Second Edition 64 Lessons with Projects

  • More Components and SemiconductorsSECTION 325SIMPLE PLUMBING SYSTEMScan be used to explainmany components in electronics. ■Water flows like electrons flow. ■We can put pressure behind water. ■There are different size pipes. ■Valves control the flow of water. ■We can fill containers with water. ■We can drain the water from those containers.Lesson 8Capacitors and Push ButtonsYes, there is more to electronics than resistors andLEDs. Capacitors are used to store small charges.Push buttons allow you to control connections tovoltage. This lesson introduces both capacitors andpush buttons. You then build a circuit that appliesthem together.CapacitorsA capacitor has the capacity (ability) to store anelectric charge. You can see in Figure L8-1 that thesymbol of the capacitor represents two plates.In Figure L8-2, the opened capacitor clearlyshows that the capacitor is made of just two metalplates, with a bit of insulation between them. Theycome in three basic shapes and all sizes.Figure L8-1Figure L8-2