The positive terminal is connected to node IV and the negative one is connected to node II. is the voltage across node IV and Node I. Now, we need to find the current of the dependent current source in terms of the node voltages. 6 Average power, RMS voltage and current More examples Coming soon. Independent Voltage Source The voltage source which can deliver steady voltage (fixed or variable with time) to the circuit and it does not depend on any other elements or quantity in the circuit. 5 Dependent Sources More examples Coming soon. Dependent Voltage Source: They are of two types Voltage Controlled Voltage Source and Current Controlled Voltage Source. is the current of the dependent current source. The 6V lamp circuit of Figure 1 A voltage source defines the voltage across a variable resistor. Note that we always write unknowns in terms of node voltages in nodal analysis. Since it is always assumed that the reference node is the negative terminal for the defined node voltages, the voltage of node III is (instead of ).Ĭonsequently, the voltage of node III is.
Please note that the direction of is from the reference node to node III. On the other hand is the current of the resistor in the right hand side. Ĥ) If there are dependent sources in the circuit, write down equations that express their values in terms of other node voltages. Since the positive terminal of the voltage source is connected to the node, the node voltage is. We label the voltages of node I and node II with and respectively.įor node IV, the voltage source provides the voltage of the node. Node IV is connected to a voltage source whose other node is the reference node. Therefore, node II and node III form a supernode. A dependent voltage source is located between node II and node III. It is the node with largest number of elements connected to it.ģ) Assign a variable for each node whose voltage is unknown. The node at the bottom is the best candidate. Solve the circuit with the nodal analysis and determine and.
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