Basic DC Theory
DC CIRCUIT ANALYSIS
Let us consider a bridge circuit (Figure 50).
Figure 50 Bridge Circuit
Find Rt at terminals a and d.
Step 1:
Convert the Y network (b-e, e-c, e-d) to the equivalent D network.
Using Rule 2:
R1
(20)(20)
(20)(20)
(20)(20)
20
1200
20
60W
R2
1200
20
60W
R3
1200
20
60W
Step 2:
Now, we can redraw the Y circuit as a D circuit and reconnect it to the original
circuit (Figure 51):
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