Understanding Vout Waveform and Voltage Ripple in Voltage Multiplier Circuits

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Discussion Overview

The discussion revolves around understanding the output waveform (Vout) and voltage ripple in voltage multiplier circuits, specifically focusing on the Cockcroft-Walton voltage multiplier. Participants explore the characteristics of the waveform produced and the factors influencing voltage ripple.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks clarification on the expected waveform of Vout and how to calculate voltage ripple in a voltage multiplier circuit.
  • Another participant notes the ambiguity in the initial query, suggesting that there are multiple types of voltage multipliers that yield different results.
  • A participant identifies the circuit as a Cockcroft-Walton voltage multiplier, explaining that it converts AC input to DC output and mentions their own simulation experience measuring ripple.
  • One participant confirms the circuit type and expresses difficulty in calculating the voltage ripple despite having the output waveform.
  • A separate participant raises a question about the relationship between voltage and current in voltage multipliers, suggesting that while voltage increases, current decreases.
  • Another participant agrees with the assertion about current decrease, relating it to the principle of power conservation in electrical circuits.

Areas of Agreement / Disagreement

Participants generally agree on the nature of the Cockcroft-Walton voltage multiplier and its function of converting AC to DC. However, there is no consensus on the specifics of calculating voltage ripple, and the discussion includes varying perspectives on the implications of voltage and current relationships in these circuits.

Contextual Notes

The discussion lacks detailed information on the specific parameters affecting voltage ripple, and assumptions about circuit conditions are not fully articulated. The relationship between voltage and current in the context of power conservation is acknowledged but not deeply explored.

Who May Find This Useful

Individuals interested in electrical engineering, circuit design, and those working with voltage multiplier circuits may find this discussion relevant.

sean23
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I am trying to simulate a voltage multiplier circuit on Pspice simulation package, which will produce an output voltage Vout.

What is the waveform of Vout supposed to look like?
And also how will i work out the voltage ripple of the waveform?
 
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Sean you have not given enough info here -- I assume you mean a dc to dc multiplier but there is more than one way of doing this and the results differ.
Ray.
 
If your talking about a Cockroft Walton voltage multiplier then you put AC in and get DC out. I simulated this in Electronic workbench and used the o-scope to measure ripple, use AC coupling. The amount of ripple depends on a bunch of things, check out this website http://home.earthlink.net/~jimlux/hv/cw1.htm
 
cockroft walton voltage multiplier

yes it is the cockroft walton multiplier circuit, putting in an ac source and producing dc.

i have an output waveform but i cannot work out the voltage ripple

cheers guys
 
hey random question about voltage multipliers (im only posting here because ppl have responded to this as is...lol) although they increase voltage they also decrease current, correct?
 
Yes. It's sort like a transformer. The power in can't be less than the power out (on a continuous basis). Since P = V*I, the output current must decrease in proportion with the voltage increase.
 
k, just makin sure. lol
 

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