Transforming a switch into a voltage source

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Discussion Overview

The discussion revolves around the transformation of a switch into a voltage source within a circuit context. Participants explore the implications of representing a switch with a step function and its effects on circuit behavior, particularly regarding voltage and current dynamics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants question the basis for transforming a switch into a voltage source, expressing confusion about the representation.
  • There is a suggestion that the transformation involves a step function that acts like a switch, with one participant noting it goes to zero for t>0.
  • Another participant proposes that the transformation generates a 12V opposing another 12V supply until t=0, at which point it ceases to affect the circuit.
  • Concerns are raised about how the coefficient of the step function is determined and whether it accurately reflects the original circuit's behavior.
  • Clarifications are made regarding the nature of the voltage (positive vs. negative) and its implications for circuit operation.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the voltage source and its relationship to the original circuit. There is no consensus on the exact mechanics of the transformation or its implications.

Contextual Notes

Participants do not fully agree on the interpretation of the voltage source transformation, and there are unresolved questions regarding the step function's coefficient and its equivalence to the original circuit.

Who May Find This Useful

This discussion may be of interest to those studying circuit theory, particularly in the context of switch behavior and voltage source transformations.

nhrock3
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nhrock3 said:
http://i47.tinypic.com/4pxbte.jpg

i can't understand upon what bais they made such a transition

?

What is that thing? A 12uV voltage source backwards? Or is it supposed to represent the final current through the inductor?
 
its some step function
which represents a voltage sorse
-t says its zero from t>0 and forward
 
nhrock3 said:
its some step function
which represents a voltage sorse
-t says its zero from t>0 and forward

Oh, so it's meant to replace the switch with a step function. Okay.
 
its acts like a switch
its a step function of -t

from t>0 and forward it goes to zero like a switch

but how they got its coefficient of the step function?

i can't see how its the same as the original circuit
??
 
It looks to me like it generates a 12V that is opposing the other 12V supply, up until t=0 when it goes off and let's the other 12V supply be the only supply in the circuit. for t<0 when the two 12V supplies oppose each other, there is no net voltage to drive a current around the circuit.
 
can you describe how its like the original circuit?
 
how its opposing ??

its plus 12
not minus 12
 
ahh thanks :)
 

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