Solved: Copy and paste error

athurin · ‎May 19, 2014

Hi,

I am working on a inductor/transformer design. I did a sheet with one calculation I am happy with. I did a copy of it, and pasted it just below. I would have assumed all variables would be reaffected, and it would all work well.

Except it didn't. With the exact same input, copied below, one of the result is wrong (and quite obviously, since the unit is all messed up).

Se attached document : in the first calculation, Bmax = 0.402T ; in the second, Bmax = 0.013 m T / A.

Again, it is just a "brutal" copy and paste ...

Thanks

Werner_E · ‎May 19, 2014

In your copied version I.pk is not assigned the unit Ampere but is 10 times the value of your variable A which is a length (Bobbin outer diameter, 31.1mm) . Label the A as unit and you get the result you expected.

The second time the automatic labelling couldn't know which A you had in mind and chosed your variable.

View solution in original post

Werner_E · ‎May 19, 2014

In your copied version I.pk is not assigned the unit Ampere but is 10 times the value of your variable A which is a length (Bobbin outer diameter, 31.1mm) . Label the A as unit and you get the result you expected.

The second time the automatic labelling couldn't know which A you had in mind and chosed your variable.

athurin · ‎May 20, 2014

Well that is a silly and embarassing mistake. Sorry about that.

Thank you very much for your help.