ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 1
NOTE
All values for CT, C1, C2, C3,...Cn should be
in farads. It should be evident from the
above formulas that the total capacitance of
capacitors in series is less than the
capacitance of any of the individual
capacitors.
(2) Capacitors in Parallel. When capacitors are connected in
parallel, one plate of each capacitor is connected directly to
one terminal of the source, while the other plate of each
capacitor is connected to the other terminal of the source.
Figure 40 shows all the negative plates of the capacitors
connected together, and all the positive plates connected
together. CT, therefore, appears as a capacitor with a plate
area equal to the sum of all the individual plate areas. As
previously mentioned, capacitance is a direct function of plate
area. Connecting capacitors in parallel effectively increases
plate area and thereby increases total capacitance.
FIGURE 40. PARALLEL CAPACITIVE CIRCUIT.
For capacitors connected in parallel the total capacitance is
the sum of all the individual capacitances. The total
capacitance of the circuit may be calculated using the formula:
CT = C1 + C2 + C3 + .........Cn
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