From: Ramiro A. <ea...@gm...> - 2011-06-27 09:32:58
Attachments:
prueba_trafo.dpl
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Hi all, I am new to this list. In the past I was using ngspice, but I was tired of making circuit netlists by hand. So I discovered QUCS and wanted to change. I like it very much, it also cames with stripline and filter desing. Very valuable for me and my amateur radio experiments (http://ea4nz.ure.es/sdr.html) Today I did some stupid simulation just for test, and I was puzzled with the results. I place an ideal 2:1transformer. At the input, a DC source in series with an AC 1 MHz source and a 50 ohm resistor. At the output, a 50 ohm load. After transient simulation, I expected no DC voltaje at the output, but it was present. What am I missing? I will appreciate your help. Not sure if I can send attached files to the list. Ramiro. EA4NZ. |
From: Carsten K. <cko...@cb...> - 2011-06-27 10:46:00
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Hi Ramiro, yes, attachment works, but only a "data display" file was attached. Please also send the schematic (*.sch) file. Carsten ----- Original Message ----- From: "Ramiro Aceves" <ea...@gm...> To: quc...@li... Sent: Monday, June 27, 2011 11:32:43 AM Subject: [Qucs-help] Ideal Transformer Hi all, I am new to this list. In the past I was using ngspice, but I was tired of making circuit netlists by hand. So I discovered QUCS and wanted to change. I like it very much, it also cames with stripline and filter desing. Very valuable for me and my amateur radio experiments (http://ea4nz.ure.es/sdr.html) Today I did some stupid simulation just for test, and I was puzzled with the results. I place an ideal 2:1transformer. At the input, a DC source in series with an AC 1 MHz source and a 50 ohm resistor. At the output, a 50 ohm load. After transient simulation, I expected no DC voltaje at the output, but it was present. What am I missing? I will appreciate your help. Not sure if I can send attached files to the list. Ramiro. EA4NZ. ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Qucs-help mailing list Quc...@li... https://lists.sourceforge.net/lists/listinfo/qucs-help |
From: Ramiro A. <ea...@gm...> - 2011-06-27 10:57:56
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Oh, I believed I atached both, here I send it THank you very much |
From: Stefan J. <st...@gr...> - 2011-06-27 11:07:12
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Am Mo, 27.06.2011, 11:32 schrieb Ramiro Aceves: > Hi all, Hello Ramiro, > I am new to this list. In the past I was using ngspice, but I was tired > of making circuit netlists by hand. So I discovered QUCS and wanted to > change. I like it very much, it also cames with stripline and filter > desing. Very valuable for me and my amateur radio experiments > (http://ea4nz.ure.es/sdr.html) > > Today I did some stupid simulation just for test, and I was puzzled with > the results. > > I place an ideal 2:1transformer. At the input, a DC source in series > with an AC 1 MHz source and a 50 ohm resistor. At the output, a 50 ohm > load. After transient simulation, I expected no DC voltaje at the > output, but it was present. > > What am I missing? > > I will appreciate your help. Not sure if I can send attached files to > the list. I believe n versions <= 0.0.15 there was a real ideal transformer (@_@) which also transformed DC... In the current version 0.0.16 this should have been fixed, isnt it? Best regards, Stefan. |
From: Ramiro A. <ea...@gm...> - 2011-06-27 11:19:37
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> > I believe n versions<= 0.0.15 there was a real ideal transformer (@_@) > which also transformed DC... Yes Stefan, I am using 0.0.15 on Debian GNU/Linux Squeeze. I have not tested 0.0.16. What do you think about my NGspice-> QUCS change? If such a simple ideal transformer model has such a bug, what can I expect from more complicated models?. Any recomendation will be appreciated. What is your experience with QUCS? Thanks. Ramiro, EA4NZ > > In the current version 0.0.16 this should have been fixed, isnt it? > > Best regards, Stefan. > > |