Series and parallel capacitors

Chapter 13.4 Series and parallel capacitors

Lessons In Electric Circuits Volume I – DC Book
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Lessons In Electric Circuits Volume I – DC Book

  • 452CHAPTER 13. CAPACITORSAs the shaft is rotated, the degree to which the sets of plates overlap each other will vary,changing the effective area of the plates between which a concentrated electric field can beestablished. This particular capacitor has a capacitance in the picofarad range, and finds usein radio circuitry.13.4Series and parallel capacitorsWhen capacitors are connected in series, the total capacitance is less than any one of theseries capacitors’ individual capacitances. If two or more capacitors are connected in series,the overall effect is that of a single (equivalent) capacitor having the sum total of the platespacings of the individual capacitors. As we’ve just seen, an increase in plate spacing, with allother factors unchanged, results in decreased capacitance.C1C2equivalent toCtotalThus, the total capacitance is less than any one of the individual capacitors’ capacitances.The formula for calculating the series total capacitance is the same form as for calculating