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10th November 2004, 12:00 PM
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#1 |
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diyAudio Member
Join Date: Oct 2002
Location: Cape Town
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SUSY simulation test
Could you guys please help me with this?
Use SIMetric (or ORCAD) and would like to know what is the correct what to simulate the SUSY configuration. I want to "inject noise" in the one side (suposedly the output) and see how it is reproduced in phase at the other side. Please see circuit below for how I am doing it currently. V4 is the "noise" source and represents noise generated by Q1 at it's drain. Is this correct? Thanks! 
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The brave might not live forever but the cautious never live at all! |
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10th November 2004, 12:50 PM
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#2 |
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diyAudio Member
Join Date: Aug 2001
Location: Ingolstadt Germany
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Hi,
why do you choose 220R for R6 and R11? Normally 100k is used here, what is the purpose of the caps C7 and C8. V4 is connected correctly. William
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10th November 2004, 12:59 PM
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#3 |
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diyAudio Member
Join Date: Oct 2002
Location: Cape Town
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Thanks for the reply William,
Not really bothered about R6 and R11 here - they work together with C7 and C8 for stabality. Forget these for now - this was actually just one of the hundreds of circuits I have played with and just happened the one I picked to ask the question. (I think it stems from the Aleph secondary input but not important) I was just wondering if there is better way to "test" error correction with these simulators...
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The brave might not live forever but the cautious never live at all! |
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10th November 2004, 09:28 PM
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#4 |
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The one and only
Join Date: Mar 2001
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The test looks fine to me.
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10th November 2004, 10:25 PM
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#5 |
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diyAudio Member
Join Date: Jun 2004
Location: Central CA
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re: SUSY simulation test
Vossie,
Try injecting a noise current with a current source at the Q1 drain node. IMHO the voltage souce with the resistor R7 effects the gain of the Q1 side. With a current source I think C9, R7 is not needed. Just an Idea. Tom |
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