I was working on a problem for finding the thevinin equivalent circuit. In order to find the short circuit current , I short circuited the terminals across which I had to find the thevinin impedance.

The terminals contain a dependent voltage source .

My question is does the shot circuit which I have described short circuit the dependent voltage source.

In other words cab we short circuit a dependent voltage source.


Does the dependent voltage source become redundant after a short circuit.

Thank you


  • \$\begingroup\$ en.wikipedia.org/wiki/Irresistible_force_paradox In other words, you can't do that - the models are invalid in that situation, and if you try to do it with real approximations, the fact that they approximate only in limited conditions will become apparent. \$\endgroup\$ – Chris Stratton May 17 '16 at 12:40

If the dependent voltage source is across the terminals, you cannot short circuit the terminals to find to short circuit current. The Thevenin equivalent can be found by calculating the open-circuit voltage and the Thevenin resistance. To find the Thevenin resistance, you zero any independent sources and excite the circuit by applying a current to the terminals and calculating the resulting terminal voltage. The Thevenin resistance is the ratio of voltage to current.


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