Help with Circuit to Invert Graph

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Discussion Overview

The discussion revolves around creating a circuit to invert a graph, specifically focusing on the design and functionality of filters, such as low-pass and high-pass filters, in the context of electronics. Participants seek assistance in circuit design and simulation to achieve a desired output graph for a project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • Some participants identify the circuit as a low-pass filter and suggest that to invert the frequency response, a high-pass filter may be needed.
  • One participant mentions that the phase response should be plotted to confirm whether the circuit is inverting, as the magnitude will always be positive.
  • There are requests for video tutorials and circuit diagrams to assist in understanding the circuit design.
  • Participants discuss the need to connect components correctly, including the orientation of voltage inputs and the configuration of op-amps.
  • Some participants propose combining low-pass and high-pass filters to achieve a specific bandpass response.
  • There are clarifications about circuit components, such as the ground symbol and the role of resistors and capacitors in the circuit.
  • One participant expresses frustration over not being able to replicate a desired output graph and seeks further assistance.
  • Another participant emphasizes the importance of using a high impedance load for the output.
  • Some participants share their own circuit designs and results, while others request specific guidance on their attempts.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the correct circuit design or the best approach to achieve the desired graph. Multiple competing views and suggestions remain throughout the discussion.

Contextual Notes

Limitations include varying levels of understanding among participants regarding electronics, leading to potential miscommunication about circuit components and configurations. Some participants express a lack of familiarity with the subject matter, which may affect their ability to follow technical discussions.

Who May Find This Useful

This discussion may be useful for individuals interested in electronics, particularly those working on circuit design and simulation for projects involving filters and signal processing.

  • #31
sheheryarnoor said:
He is on medicines thanks for asking
Can u draw a circuit actually i m having exam
i am a student of computer science and i am into 3d designing so i don't know about electronics much
Draw a circuit for me and i will try to make a circuit like and will make a video if i do something wrong u will see it in the video
O.K
SO u can guide me
Can u please?

You don't know about Electronics but you are doing an exam in it? That is amazing.

Anyway, here is a high pass filter:
[PLAIN]http://dl.dropbox.com/u/4222062/high-pass.PNG

Can you see how it works?
The capacitor has less and less reactance as the frequency rises, so it drops less of the input voltage and more gets to the output.
 
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  • #32
vk6kro said:
You don't know about Electronics but you are doing an exam in it? That is amazing.

Anyway, here is a high pass filter:
[PLAIN]http://dl.dropbox.com/u/4222062/high-pass.PNG[/QUOTE]
I'm not sure anymore but I think he was wanting a op-amp circuit. Think you'll be able to explain it before the exam? :devil:
 
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  • #33
No problem. :)

I was wondering if some Butterworth filter pole-zero diagrams might cheer his friend up a bit and speed his recovery?
 
  • #34
lol u are funny
So u gona show me a circuit diagram?
 
  • #35
Which circuit are you looking for?
 
  • #36
The circuit which can make a graph on Vout like the one in the pic
2drrl39.png
 
  • #37
vk6kro said:
Anyway, here is a high pass filter:
[PLAIN]http://dl.dropbox.com/u/4222062/high-pass.PNG

This circuit will give that spectral response if the signal generator at the left is set to give 2 volts peak.
 
Last edited by a moderator:
  • #38
Code:
[URL]http://rapidshare.com/files/397504699/clip0005.avi
[/URL]

Look at this video i made a circuit like this but it didn't give me the desired graph
 
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  • #39
I'll give you the answer if you tell me what the cut-off frequency of the filter is.
 
  • #40
I don't know because it isn't my project i am doing it for my friend i don't know about electronics and i am learning from this site little i got that what is HPF and LPF and actually he just needs a graph like the one i have displayed in the pic
Anyone can make a circuit for it to get a graph like this?
 
  • #41
So anyone gona help me?
Please
 
  • #42
What would you like to know?

When you do a simulation, do a screen grab of the graph and also the circuit you have entered.

A 10 MB video is too big to download.

To do a screen grab, push the PrtSc key (next to F12) and paste into MS Paint.
Trim off the menu bar and any other unnecessary stuff and attach it to a posting.
 
  • #43
I would turn off bias point detail and increase the upper frequency to 1000000 Hz, not 1000 Hz.

Try that.
 

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