CHAPTER 12
Intruder Alert! Design a Basic Alarm Circuit |  |
THIS PART OF THE BOOK CONTAINS experiments that explore security circuits. There are many types of security products on the market today, such as home and vehicle burglar alarms, home security lights that switch on when it is dark, and security keypads that require you to press a sequence of buttons to gain entry into a security door, to name a few. You’ll be exploring all these security products in this section of the book and building experimental circuits that emulate some of their features. You can use Experiment 9 as the basis of your own alarm project to protect your belongings in your ...
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