1• Thevenin and Norton equivalents (II)ECE 201: Lecture 12Borja PeleatoPathological cases• Some circuits do not have a Thevenin or Norton equivalent:234567Sufficient Conditions• Most circuits have both a Thevenin and Norton equivalents, but– Some circuits only have Thevenin– Others only have Norton– Some (very strange) ones have none• The following sufficient conditions hold:– If there is a Thevenin equivalent and RTHis NOT 0, then there is a Norton equivalent– If there is a Norton equivalent and 1/RNis NOT 0, then there is a Thevenin equivalent8Equivalents from measured data9Open circuit/Short
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