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Question asked by jwinkl on Mar 12, 2003
Latest reply on Mar 20, 2003 by ROB_LEFEBVRE

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Thanks, Randy. On the EMPOWER subject: I just laid out a CPW board with a funny geometry under Designs/Models, and I added the footprints of capacitors, resistors, etc. I recall being able to take this physical board, plus footprints, and tell Eagleware to make a schematic out of it (going opposite the "normal" way of doing things). Am I wrong? I hope I'm not, because I'm not sure how I would account for the board geometry in SCHEMAX (there are some polygon-shape traces). Your thoughts would be appreciated. Hi to Jerry, too.

If I should submit this through the Genesys forum instead, please let me know.

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RANDY_RHEA Mar 12, 2003 9:28 AM
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EMPOWER works from metal, the linear circuit simulator works from components. Unless you have a model for the "funny object", there is no point in it being in the schematic because the circuit theory simulator won't handle it anyway. Rmember, EMPOWER is not just to increase accuracy, by its nature it deals with issues that circuit theory can not, such as unusual objects, discontinuity coupling, radiation, package modes and loss for lines not a multiple of a quarter wavelength long.

It never has gone backwards.

Our support logging system does work better if support issues are sent to support@eagleware.com or the GENESYS Questions forum.

Thanks for using the Founder's Forum. It's a great opportunity for others to pick up design ideas and tips.

Clear skies and high Q
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ROB_LEFEBVRE Mar 20, 2003 2:47 PM
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There is an additional technique which is useful if you only have a board, and no schematic, but need lumped elements in an EMPOWER simulation:

1) Lay out the board but do NOT add the components.

2) Create a dummy schematic, and place all of the elements there, unconnected.

3) On the layout properties, check the box saying to include the schematic.

4) GENESYS will create components on the board. Move them where they go.

You can't simulate the schematic this way, but you CAN simulate the layout in EMPOWER. To make this easier, we will add the capability to add components directly to the layout, probably in the next release or so.

Rob Lefebvre
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