Devin's Theorem and Norton's Theorem

Devin's Theorem

• Can be replaced with an equivalent circuit consisting of a single voltage source.
• The equivalent voltage (
  • represented by (V_{\text{th}})
  • equal to the open circuit voltage across the two terminals of the network.
• Circuit analysis:
  • Replace all energy sources with their internal resistances.
  • Measure the equivalent resistance between the terminals._

Norton's Theorem

• Norton’s equivalent circuit:
  • Consists of a current source (denoted by (I_N)) in parallel with a resistor (R_N).
• Calculation details:
  • The value of (I_N) is given as: (I_N = \frac{V}{2} + ...)
  • The equivalent Norton resistance (R_N) is given by: (R_N = \frac{24}{7})
• Equivalent Norton current (not fully provided)

Important Notes

• Open circuit notation is crucial for identifying (V_{\text{th}}).
• Parallel circuit components for Norton’s theorem are essential for correct equivalent circuit representation.
• Various foreign terms and discussion on the current, voltage, and resistance relations seen in practice through examples._