Some circuits require more than one voltage or current source.

More Questions from Circuit Theorems and Conversions

• You cannot convert a voltage source to an equivalent current source, or vice versa.
• Transistors act basically as voltage sources.
• Norton's equivalent current (IN) is an open-circuit current between two points in a circuit.
• Conversions between delta-type and wye-type circuit arrangements are useful in certain specialized applications.
• An ideal current source has zero internal resistance.
• An ideal voltage source has zero internal resistance.
• A practical current source has a finite internal resistance.
• The Thevenin equivalent voltage (VTH) is the short-circuit voltage between two terminals in a circuit.

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