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Netlist error

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FlavioWilly 3 years ago

Hi to everybody. I can't understand why of the net failure shown below. Can someone help me? If you need more info, please tell me it. \*\* Sheet\_1 \*\* RP1 RP1\_1 RP1\_2 GND 25K C1 RP1\_2 C1\_2 0\.1U C2 C2_1 GND 0,000015 C3 C2_1 GND 0,1 R3 C2_1 GND 750 R1 C1\_2 R1\_2 15K R2 GND C1_2 1M R4 R4\_1 R4\_2 56K R5 VCC R4_1 18K R9 NETPORT3 GND 15K C4 R4_1 GND 100NF C5 R4_1 GND 22UF C6 R4_2 NETPORT3 100NF V2 VCC GND 400 XFG1 RP1\_1 GND XFG1\_\- FUNCTIONGENERATOR\_XFG1 XU1 R4\_2 NoNet C2\_1 12AT7 .SUBCKT FUNCTIONGENERATOR_XFG1 1 2 3 V1 1 2 SINE(50 0.1 1k) V2 2 3 SINE(50 0.1 1k) .ENDS .op \* 12AT7 Triode PSpice Model 8/96\, Rev\. 1\.0 \(fp\) * \* \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- * This model is provided "as is", with no warranty of any kind, * either expressed or implied, about the suitability or fitness * of this model for any particular purpose. Use of this model * shall be entirely at the user's own risk. * * For a discussion about vacuum tube modeling please refer to: * W. Marshall Leach, jr: "SPICE Models for Vacuum-Tube Amplifiers"; * J. Audio Eng. Soc., Vol 43, No 3, March 1995. \* \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- * \* This model is valid for the following tubes: \* 12AT7/ECC81\, 6AB4/EC92\, 6201\, 6679; \* at the following conditions: * Plate voltage : 0..500V * Grid voltage : 0..-8V * Cathode current: 0..30mA * \* Modified DM 28/4/97: * * 1 Model altered to prevent anode draw at Va < 5V. E2 is the * anode draw multiplier in the range 0..1 * * \* Connections: Plate \* \| Grid \* \| \| Cathode \* \| \| \| .SUBCKT 12AT7 P G K E1 2 0 VALUE={V(P,K)+63.19*V(G,K)} E2 3 0 VALUE={LIMIT{V(P,K)/5,0,1}} R1 2 0 1.0K Gp P K VALUE=\{V\(3\)\*6\.717E\-6\*\(PWR\(V\(2\)\,1\.5\)\+PWRS\(V\(2\)\,1\.5\)\)/2\} Cgk G K 2.2P Cgp G P 1.5P Cpk P K 0.5P .ENDS 12AT7

Electron 4.2.10 Windows 10 EasyEDA 6.4.25

Comments

andyfierman 3 years ago

[https://easyeda\.com/andyfierman/Valve\_Tube\_examples\-05ZhzR9rJ](https://easyeda.com/andyfierman/Valve_Tube_examples-05ZhzR9rJ) ![image.png](//image.easyeda.com/pullimage/fBe6STlYXM81gsosfVRrRopcTyLBH61sVsjP61i3.png) ![image.png](//image.easyeda.com/pullimage/VETledxxk7jjOC6OBEmK5MoU9oDSxh5nsdxKu1nM.png) [https://easyeda\.com/example/2x30W\_EL34\_tube\_amplifier\_simulation\-rpjBvM4mg](https://easyeda.com/example/2x30W_EL34_tube_amplifier_simulation-rpjBvM4mg) Please also read: [https://docs.easyeda.com/en/Simulation/Headings/index.html](https://docs.easyeda.com/en/Simulation/Headings/index.html)

Firefox 94.0 Ubuntu EasyEDA 6.4.25

andyfierman 3 years ago

And: [https://easyeda.com/andyfierman/180501](https://easyeda.com/andyfierman/180501)

Chrome 96.0.4664.45 Windows 10 EasyEDA 6.4.25

andyfierman 3 years ago

For info: The original question was about how to find spice models for thermionic valve (a.k.a. tube) simulations. However, the original poster has completely changed the original post and title of this topic and so rendered it useless for anyone who does not remember it. @FlavioWilly, Please make your project public and post the url to it here.

Chrome 94.0.4606.61 AndroidOS 10 EasyEDA 6.4.25

andyfierman 3 years ago

@FlavioWilly, You appear to have not read, understood and acted upon either the Simulation Tutorial or the valve simulation examples that I pointed you to. The 12AT7 model file that you have shown in your spice netlist above is taken directly from Duncan Munro's site whereas there are already three different versions of the 12AT7 model that have been tested in EasyEDA and are clearly identified in the **Triode common cathode stage test jig** here: [https://easyeda.com/editor#mode=sim,id=6ece0128f7d74a15a8e1f7009aa3e2d4](https://easyeda.com/editor#mode=sim,id=6ece0128f7d74a15a8e1f7009aa3e2d4) 12AT7_DC 12AT7_DM NH12AT7_DMGTM These models were originally edited for Ngspice compatibility (which used as the simulation engine when EasyEDA was first launched over 8 years ago) but have since been rechecked for compatibility with LTSpice as is now used in EasyEDA. When asking for help please make sure that you have read: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)

Chrome 96.0.4664.45 Windows 10 EasyEDA 6.4.25

andyfierman 3 years ago

@FlavioWilly, "I can't understand why of the net failure shown below." What error message do you get?

Firefox 94.0 Ubuntu EasyEDA 6.4.25

FlavioWilly 3 years ago

Hi. First of all I wish to tank Andy for his suggestions that allowed me to understand a fix my issues. Now I'm facing a new issue related to the output transformer. My OT specs are Push Pull driven by 2xKT88 in parallel for each brach Resistence plate to plate: 1,5Kohm Turn ratio (plate to plate to 8 ohm output): 13,70 Primary inductance (LP): 433H Leakage primary inductance (Lsp): 4,22 mH Capacitance of primary turn: 11.3 nF Can someone help me to know how to create this component for spice simulator? Thank you

Electron 4.2.10 Windows 10 EasyEDA 6.4.25

andyfierman 3 years ago

"Can someone help me to know how to create this component for spice simulator?" The Simulation Tutorial, (3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) is marked as essential reading before attempting to do simulation in EasyEDA. Please see the examples about Transformers and Coupled Inductors in here: [https://docs.easyeda.com/en/Simulation/Chapter4-Introduction-to-using-a-simulator/index.html#The-effects-of-adding-DC-paths](https://docs.easyeda.com/en/Simulation/Chapter4-Introduction-to-using-a-simulator/index.html#The-effects-of-adding-DC-paths) Then check out the transformer in the example I pointed you to in my original reply: [https://easyeda\.com/example/2x30W\_EL34\_tube\_amplifier\_simulation\-rpjBvM4mg](https://easyeda.com/example/2x30W_EL34_tube_amplifier_simulation-rpjBvM4mg) This does not include leakage inductance or interwinding capacitance. For more detailed information on modelling transformers see: [http://ltwiki\.org/index\.php?title=K\_Mutual\_Inductance](http://ltwiki.org/index.php?title=K_Mutual_Inductance) [http://ltwiki.org/index.php?title=Transformers](http://ltwiki.org/index.php?title=Transformers) Or, for a fee, I can develop a spice model of your transformer. To discuss this further, please email me using my username @ easyeda.com One question: are you sure that the Primary inductance (LP): 433H is correct? That sounds quite large.

Firefox 94.0 Ubuntu EasyEDA 6.4.25

你现在访问的是EasyEDA海外版，建议访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程，下载后在https://lceda.cn/editor 打开保存即可。
联系我们：https://docs.lceda.cn/cn/FAQ/Contact-Us/index.html不再提醒

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