CHAPTER 3
Power Sources: Batteries and Battery Holders, Safety Issues, and Voltmeters
We first cover different types of batteries and their holders. In particular, some holders have similar connectors and can cause the wrong voltage to be supplied to your circuits. Also, we will take a look at various digital voltmeters that will be one of your main troubleshooting tools.
Batteries
Many circuits today can be powered by about 3 volts to 9 volts. These voltages can be supplied by batteries connected in series. Although there are different types of 1.5-volt battery sizes, such as AAA, AA, C, and D, the most common ones to use are AA. There are ...
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