Understanding the Source of AC in Circuit Alimentation

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Discussion Overview

The discussion revolves around the nature of alternating current (AC) sources in electrical circuits, specifically whether an AC circuit can be powered by a voltage source, a current source, or both. The conversation includes technical explanations and clarifications regarding the symbols used to represent these sources.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether an AC circuit is powered by a voltage source or a current source.
  • Another participant asserts that either a voltage source or a current source can serve as an AC source.
  • A participant raises a question about the equivalence of an AC voltage source and an AC current source.
  • It is noted that a voltage source in series with a resistor can be considered a current source, and a current source with resistance in parallel can be viewed as a voltage source, indicating their interchangeable nature.
  • A participant shares a link to an image and asks for clarification on whether it represents a current or voltage source.
  • Responses clarify that the symbol in question represents an AC voltage source, with additional details about the symbols for current sources.
  • One participant mentions their lack of a textbook but references their collection of math and mechanics materials.

Areas of Agreement / Disagreement

Participants express differing views on the representation and equivalence of AC voltage and current sources, indicating that multiple competing views remain in the discussion.

Contextual Notes

There are unresolved aspects regarding the definitions of voltage and current sources, as well as the specific symbols used to represent them, which may depend on context or conventions in different textbooks.

Jhenrique
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When a circuit is being alimented by AC this means that exist in the circuit a voltage source that is generating the AC or exist a current source that is generating the AC?
 
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Either will do the job.
 
A voltage source that produces AC is = a current source that produces AC ?
 
Voltage source plus resistor in series is a current source; current source with a resistance in parallel is a votage source. They can be transformed freely, and thus either can be an AC source.
 
but this guy:
http://upload.wikimedia.org/wikipedia/commons/6/6d/TE_Compon_07.svg
represents a current source or a voltage source?
 
That symbol is an AC voltage source ... the same circle as for a DC voltage, but since the +/- changes with time the squiggle represents the sine wave.

Current source symbols usually have an arrow.

What textbook are you studying from? It should have a table of symbols.
 
UltrafastPED said:
That symbol is an AC voltage source ... the same circle as for a DC voltage, but since the +/- changes with time the squiggle represents the sine wave.

Current source symbols usually have an arrow.

What textbook are you studying from? It should have a table of symbols.

Actually, none (for the time being). But, for show you that I'm not a lazy, look my collection of math and mechanics in anex.
 

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