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Schematic PCB Simulation Skill Extension Feature Requests Bug Reports

New to EasyEDA and getting unexpected simulation results.

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spiffer00 5 years ago

I'm new to EasyEDA. I'm trying to simulate a differential amplifier and I've placed a voltage probe at the output of the op-amp but the results I'm getting are not as expected. The simulation shows a waveform with an amplitude of almost 200V while the op-amp is operating with a supply voltage of 3.3V. Clearly this cannot be. Where am I going wrong? The link to the project is [https://easyeda.com/spiffer00/differential-amplifier-01](https://easyeda.com/spiffer00/differential-amplifier-01) Thanks.

Chrome 61.0.3163.100 Windows 81 EasyEDA 5.8.22

Comments

andyfierman 5 years ago

The problems are that: 1) you have no voltage source to supply the opamp; 2) you're using an opamp symbol that has no spice model associated with it. Please read: [https://docs.easyeda.com/en/Simulation/Headings/index.html](https://docs.easyeda.com/en/Simulation/Headings/index.html)

Chrome 71.0.3578.99 AndroidOS 8.1.0 EasyEDA 5.9.24

spiffer00 5 years ago

Thanks Andy. Is there a pdf or other downloadable format for the simulation ebook so I can read it offline?

Chrome 61.0.3163.100 Windows 81 EasyEDA 5.8.22

andyfierman 5 years ago

It is intended that the simulations in it illustrate and support the text so sorry but not at the moment.

Chrome 71.0.3578.99 AndroidOS 8.1.0 EasyEDA 5.9.24

spiffer00 5 years ago

With the examples that are given in the simulation tutorial there are multiple schematics on the sheet and when you try to run the simulation you get the message that the simulation results are too large. I read in the notes of one of the examples that I'm supposed to click on a "little green pencil" to select among the schematics for simulation. I don't see this green pencil when I use either Firefox or Chrome.

Firefox 64.0 Windows 81 EasyEDA 5.8.22

andyfierman 5 years ago

The EasyEDA GUI changed a while back and the documentation in many of the sims hasn't caught up yet. The schematics will be listed along the lower left of the schematic editor tab. Click on them to see what's what and then to run a simulation, just press CTRL+R. Can you copy and post the link from the Simulation eBook to any sims that you are having trouble with? Thanks.

Chrome 71.0.3578.98 Windows 10 EasyEDA 5.9.24

spiffer00 5 years ago

With all the examples that have multiple circuits on the same sheet there seems to be no way to select a particular circuit. I don't see the list of schematics on the lower left. One of the examples I' m having trouble with is: [https://easyeda.com/editor#id=33ceeaef756d4e4d81aef87c9b9f25ea](https://easyeda.com/editor#id=33ceeaef756d4e4d81aef87c9b9f25ea)

Firefox 64.0 Windows 81 EasyEDA 5.8.22

example 5 years ago

@spiffer00, Sorry for theinconvenience but something seems to have happened to break the Ammeter and Voltmeter spice symbols. We're working on it and will post back when it is fixed.

Chrome 71.0.3578.98 Windows 10 EasyEDA 5.8.22

你现在访问的是EasyEDA海外版，使用建立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。
有问题联系QQ 3001956291 不再提醒

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