Hi BernardEasy, Welcome to EasyEDA. I suspect that you have either: i) tried to run a simulation using 'passive' schematic symbols - i.e. symbols with no associated spice simulation model - instead of 'active' spice symbols. or ii) you have done all the right things regarding symbols and pasting in models etc. but have forgotten the crucial step of changing the symbol in the schematic from one expecting a .model defined spice model to one that is expecting to find a .subckt defined model, i.e. you have missed the 'Select the symbol then press the `I` key and change the Spice Prefix to `X`' step. However, to help us help you, we need to be able to see your simulation. Can you either make a copy of your circuit public or share it under Access Control? https://easyeda.com/Doc/Tutorial/share.htm#Sharing In the meanwhile to help understand how to correctly assign spice models to schematic symbols for simulation, please have a read through the **EasyEDA Simulation eBook** at: https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub In particular: **Device Models:** https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.43ky6rz (The Google links above are to the original copy of the Simulation eBook which you can also find at: https://easyeda.com/Doc/Simulation-eBook/ but the table of contents in the EasyEDA copy is broken and misses out some sections. We are working to fix it but in the meanwhile the copy published to the web from Google Drive works just as well.)

Hi Bernard. A simulatable Spice Symbol for the TI 2GHz Opamp, THS3202, is now in the SHIFT+F searchable library. :)

BFT92, BFS17A, BFQ19 subckts added to SHIFT+F searchable library. No symbols yet.... just use the bjt symbols from the EasyEDA Libs and chenge to X for subckts then edit names. :)

BFT92, BFS17A, BFQ19 spice symbols now in main library. :)

I put the new components in the schematic diagram but have the same errors at simulation. The project is now set public. Kind Refards, Bernard

Hi Bernard, Your circuit does not simulate because unfortunately: i) you had not picked up the simulatable BFT92, BFS17A, BFQ19 and THS3202 spice symbols that I had put in the SHIFT+F searchable library. ii) You have included two instances of the MMSD701T1G diodes for which no publically available spice model exists. iii) For simplicity, please replace V3 with a standard spice independent Voltage Source. These are the simulatable spice symbols that you need: **THS3202**: https://easyeda.com/andyfierman/component/THS3202-NLFzRLrlD?from=editor **BFT92:** https://easyeda.com/andyfierman/component/BFT92-ac60iztL3?from=editor **BFS17A:** https://easyeda.com/andyfierman/component/BFS17A-Fx75FCYyw?from=editor **BFQ19:** https://easyeda.com/andyfierman/component/BFQ19-xC8qkCwOI?from=editor **As an alternative model for the MMSD701 I suggest using the MMSD301 diode model from:** http://www.onsemi.com/pub_link/Collateral/MMSD301T1.SP3 *Please note that the copyright on this model from OnSemi currently does not permit us to put it into our own library.* However you are permitted to use the model yourself. Here's how: Place the schottky diode symbol from the EasyEDA Libs panel into your schematic. Paste the model from the above URL into your schematic and then set the text type to `spice`. Edit the name of the schottky diode in the schematic from `BAS40` to `MMSD30LT1`. Done. For more see the EasyEDA Simulation eBook at: https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub In particular: **Device Models:** https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.43ky6rz For more about using spice independent voltage sources, please see: **Configuring Voltage and Current Sources** https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.2p2csry (The Google links above are to the original copy of the Simulation eBook which you can also find at: https://easyeda.com/Doc/Simulation-eBook/ but the table of contents in the EasyEDA copy is broken and misses out some sections. We are working to fix it but in the meanwhile the copy published to the web from Google Drive works just as well.) BTW, to save having to hunt through user's projects, please copy and paste a link to any public schematic that you are asking for help about. :)

Hello Andy, I try with a simple diagram only THS3202 but I can't copy the V1 pulse as described How can I copy the V1 in my schematic diagram? Kind Regards, Bernard Arts

i) Filter on `voltage source` in left hand Navigation panel. ii) Hover mouse over voltage source symbol: ![enter image description here][1] iii) Click on the little down arrow: ![enter image description here][2] and click on `Voltage Source`: ![enter image description here][3] iv) Click on the symbol to select the `Voltage Source`: ![enter image description here][4] v) Click on the schematic to place the `Voltage Source`. Then either: vi) Click on the `Voltage Source` symbol in the schematic to select it. vii) Edit the parameters in the right hand panel: ![enter image description here][5] or: viii) Double click on the symbol text and edit it in place: ![enter image description here][6] [1]: /editor/20160512/57346d26c0514.png [2]: /editor/20160512/57346dcd73496.png [3]: /editor/20160512/57346e052cdcc.png [4]: /editor/20160512/57346f302da00.png [5]: /editor/20160512/57346f993788b.png [6]: /editor/20160512/57346fdad0e63.png