What is the output voltage in this circuit?

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    Circuit Output Voltage
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Discussion Overview

The discussion revolves around determining the output voltage at point A in a circuit that includes a sine wave source in parallel with a DC source and a resistor. Participants explore the implications of the circuit configuration on the voltage at point A.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant, Devanand T, seeks clarification on the output voltage at point A in the given circuit setup.
  • Another participant asserts that the voltage at point A is equal to the voltage of the AC source, V, since point A is at the other end of the AC source.
  • A different participant questions the role of the DC source and resistor in determining the voltage at point A.
  • Another contribution highlights that the output voltage is dependent on the source impedance of the voltage source V, suggesting that if the source impedance is zero, point A will follow the sinusoidal voltage directly.
  • This participant also mentions that if there were a resistor between the source and node A, the voltage could be determined using superposition and the voltage divider rule, indicating that the contributions from each source would need to be summed.
  • One participant expresses gratitude for the responses received.
  • A later reply reiterates the question about the DC source and resistor, stating that their presence does not matter in this context.

Areas of Agreement / Disagreement

Participants express differing views on the influence of the DC source and resistor on the voltage at point A. There is no consensus on how these components affect the output voltage, indicating ongoing debate.

Contextual Notes

Participants reference assumptions about source impedance and circuit configuration, which may not be fully defined or agreed upon. The discussion includes conditional reasoning regarding the application of superposition and the voltage divider rule.

dexterdev
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I would like to know the output voltage in this circuit at label A. (I am a beginner , sorry for stupid questions if any? )

The circuit setup is a sine wave source (ideal) in parallel with DC source series with a resistor.


-Devanand T
 
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point A is at other end of AC source V
so voltage at A is V itself ...
 
what about dc source plus resistor
 
It is all dependent on the source impedance of the voltage source V. The way it is drawn, Rsource (Zsource) =0, so point A will be at V volts (it will follow the sinusoid) since it is a direct short.

if there were an R in between the source and node A, then you could determine the voltage there by using superposition and treating each voltage source separately (making the other voltage source 0) and using the voltage divider rule. The resulting value of A is the sum of the contributions from each source.
 
Last edited:
Thankyou all for the replies
 
dexterdev said:
what about dc source plus resistor

it doesn't matter .
 

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