Electricity & Electronic Workbooks

(Martin Jones) #1

DC Network Theorems Unit 9 – Thevenin/Norton Conversion


In an ideal situation, RN is infinite [conductance (G) = 0]. Therefore, output current is constant,


and terminal voltage varies with load resistance or load conductance.


You can use the formulas shown to convert between a Thevenin voltage source and a Norton
current source. Each source generates the same load voltage and current as the network
represented.


NEW TERMS AND WORDS


voltage source - a circuit that provides a constant voltage at its output terminals.
Norton's theorem - a network can be represented by an equivalent current source and parallel
resistor with respect to a pair of output terminals.
current source - a circuit that provides a constant current at its output terminals.


EQUIPMENT REQUIRED


F.A.C.E.T. base unit
DC NETWORK THEOREMS circuit board
Multimeter

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