BASIC ELECTRONICS - OD1633 - LESSON 1/TASK
voltages.
When two opposing sources are inserted into a circuit, current
flow would be in a direction determined by the larger source.
Examples of series aiding and opposing sources are shown in figure 31 on the
previous page.
A simple solution may be obtained for a multiple-source circuit through the
use of Kirchhoff's voltage law. In applying this method, the same procedure
is used for the multiple-source circuit as was used above for the single-
source circuit. This is demonstrated by the following.
Example: Using Kirchhoff's voltage equation, find the amount of current in
the circuit shown in figure 32.
FIGURE 32.
SOLVING FOR CIRCUIT CURRENT USING KIRCHHOFF'S VOLTAGE
CURRENT.
Solution: As before, a direction of current flow is assumed and polarity
signs are placed on the drawing. The loop equation will be started at point
A.
E2 + ER1 + E1 + E3 + ER2 = 0
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