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Hard Lessons Learned (watch out for land mines)

Former Member

So here is my experience with Eaglesoft and Element14 so far and some land mines you may encounter and how to avoid them.  First of all, the libraries that are provided with the software should be immediately discarded.  Don't keep any of them, since you will either end up designing boards that use over priced parts or parts that Element 14 does not have.  Expecially avoid any parts by Farnell, since they don't sell their parts cheap nor do their libraries contain parts that they actually sell.

 

You are better off discarding their libraries and developing your own.  It is not hard to make a part in Eagle cad and if you source your parts and make the designs yourself you won't be disappointed by the irresponsible curation of non existent parts in the default libraries.

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  • Out of curiosity, Shabaz, can you do bifilar and trifilar windings with your scheme?  Can it handle xformers?

  • in reply to D_Hersey

    Hi Don!

     

    It can't, but that was next on the agenda. It should be easy to add that capability in terms of landing pattern, but knowing

    how to design it and how many twists is harder, most sources just state an empirical number. Even dielectric constant

    is guesswork when the wire manufacturers publish so little information : ( I've built some spreadsheets to do the calculations

    based on formulas I've found over the years, but have yet to try to measure any of it. I now have a VNA so can

    learn a bit more. I think (not sure) in the past most of this was done by careful experimentation for weeks/months until the transformers

    were 'just right', and a shame that experience is being lost to some extent perhaps.

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  • in reply to D_Hersey

    Hi Don!

     

    It can't, but that was next on the agenda. It should be easy to add that capability in terms of landing pattern, but knowing

    how to design it and how many twists is harder, most sources just state an empirical number. Even dielectric constant

    is guesswork when the wire manufacturers publish so little information : ( I've built some spreadsheets to do the calculations

    based on formulas I've found over the years, but have yet to try to measure any of it. I now have a VNA so can

    learn a bit more. I think (not sure) in the past most of this was done by careful experimentation for weeks/months until the transformers

    were 'just right', and a shame that experience is being lost to some extent perhaps.

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