Norton's Theorem: Current Through Load & Dependent Sources

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Discussion Overview

The discussion revolves around Norton's Theorem, specifically focusing on the current through a load when dependent sources are present in a circuit. Participants explore the implications of short-circuiting the load terminals and deactivating independent sources while considering the role of dependent sources.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant suggests that when finding the current through the load, independent sources should be deactivated, raising a question about the effect of dependent sources on the current.
  • Another participant clarifies that the sources are not being deactivated but rather that the circuit is being solved, which may involve deactivating independent sources one at a time using superposition.
  • A participant questions why the short-circuit current (Isc) would be zero, indicating a need for clarification on this point.
  • Another participant asserts that Isc should not be zero except in a few special cases, prompting further inquiry into what those special cases might be.
  • Repeated inquiries are made about the specific special cases where Isc could be zero.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the short-circuit current can be zero, with some asserting it should not be while others seek clarification on specific conditions that may lead to it being zero.

Contextual Notes

The discussion highlights the complexity of analyzing circuits with dependent sources and the assumptions involved in applying Norton's Theorem, particularly regarding the treatment of independent sources.

ranju
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for finding the current through the load we short the load terminals and deactivate the independent sources..but if there are dependent sources ..will the current become zero through the load...?? because its stated in my reference book..iof so.. what's the reason..?? being dependent source..how does it affect supplying current to the terminals??
 
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you aren't deactivating the sources. You are solving the circuit, which may include deactivating the independent sources one at a time (superposition)
 
what is the reason of Isc or shortcircuit current to be zero?
 
it shouldn't be zero except in a few special cases.
 
n what are those spcl cases?
 
ranju said:
n what are those spcl cases?


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Pay reasonable attention to written English communication standards. This includes the use of proper grammatical structure, punctuation, capitalization, and spelling. SMS messaging shorthand ("text-message-speak"), such as using "u" for "you", and "please" for "please", is not acceptable.
 
MrSparkle said:
it shouldn't be zero except in a few special cases.
And what are those special cases?
 

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