Cells in Series and Parallel
Cells may be connected as in Figures 2–15 and 2–16 to increase their voltage
and current capabilities. This is discussed in later chapters.
Electronic Power Supplies
Electronic systems such as TV sets,VCRs, computers, and so on, require dc for
their operation. Except for portable units which use batteries, they obtain their
power from the commercial ac power lines by means of built-in power supplies