Again as we cannot express the current through the

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Unformatted text preview: the same method that we used to find the current through a resistor. However, we can write anther independent equation by equating the node voltage to that of the voltage source. v1 V (3) Case 2: Having an ideal current source between two nodes. R1 R2 v1 v3 2A v2 R4 R5 Applying KCL at node 2 (sum of currents leaving node2 equals zero), current going from node2 to node3 is ‐2A. v2 v1 v2 20 R2 R4 (1) Applying KCL at node 3, sum of currents leaving the node equals zero. v3 v1 v3 2 0 R1 R5 36 (2) EE1002 Introduction to Circuits and Systems Analysis with controlled sources (dependent sources) Such situations arise in study of transistor amplifiers. Method for handling such situations: 1) Treat it as an ideal source and write the equations as before. 2) Then use the constraint equations (which relates the dependent source to one of the other voltage and currents) to substitute the controlled source. 3) The number of unknowns stays unchanged even after the substitution of controlled source. When there are controll...
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