How Do You Find and Draw V(out) for a Sine Wave in an Ideal Diode Circuit?

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Discussion Overview

The discussion revolves around finding and drawing the output voltage (V(out)) for a sine wave input in an ideal diode circuit. Participants explore the behavior of the circuit under varying input conditions, particularly focusing on the characteristics of ideal diodes.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • The original poster (OP) requests help in solving a problem involving an ideal diode circuit with a sine wave input of 10V amplitude.
  • One participant emphasizes that the forum policy discourages doing homework for others and asks the OP to explain their attempts at solving the problem.
  • The OP mentions having calculated two output voltages based on input values of 10V and -10V but expresses uncertainty about the correctness of their approach.
  • Another participant suggests starting by drawing a graph of output voltage versus input voltage, identifying different regions where the diodes switch between on and off states, and solving for each region separately.
  • One participant agrees with the OP's approach and requests the OP to share their results, while also noting that the behavior of the circuit may vary with input voltage due to the presence of bias voltages in series with the diodes.

Areas of Agreement / Disagreement

Participants generally agree on the need to analyze the circuit behavior based on the input voltage and the characteristics of ideal diodes. However, there is no consensus on the correctness of the OP's initial calculations or the specific steps to take in solving the problem.

Contextual Notes

Participants note that the input impedance and transfer function may change with varying input voltages, which could affect the analysis of the circuit. There are also references to different regions of operation for the diodes that need to be considered.

Eng_Electro
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http://up4.w6w.net/upload/17-03-2006/w6w_2006031704465627806cb7.JPG

for the following circuit find and draw V(out) if the V(in) signal is a sine wave with amplitude of 10V (Consider all diodes to be ideal)




This is the problem , could anyone please solve it 4 me ?:?:

10x
 
Last edited by a moderator:
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The policy is that we don't do homework for you. Would you please explain how you have tried to solve this problem so far?
 
ok , no problem

i've solved it but i don't know if it is true

i have taken two values

one as 10 v

and other as - 10 v

and i have got as result two out put voltages (one for 10 v and one for

- 10 v)

and solved the problem normally after that

but , is my solving correct ? is this how i should solve the problem ?
 
Just start by drawing the Vo versus Vi graph for a linearly increasing Vi from -10V to +10V. You wll find different behavior regions where the various diodes go from Off to On. Figure out what these voltages are where the diode behaviors change (how many regions are there?), and solve each one separately. Then you can plot the Vo response to a Vi sine wave to finish answering the homework question.
 
No berkeman, the OP said to consider all diodes to be ideal. Eng_Electo, your approach is correct. Tell us what your answers are.
 
Averagesupernova said:
No berkeman, the OP said to consider all diodes to be ideal. Eng_Electo, your approach is correct. Tell us what your answers are.
Even with ideal diodes, it seems like the input impedance and transfer function will change with input voltage, based on the bias voltages in series with the diodes. Pushing the input voltage high is a lot easier, for example, than pulling it low where the first clamp stage will be operating.
 

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