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My first post. I'm trying SMath instead of MathCad P4. RF Resistance. ber and bei.sm (35kb) downloaded 26 time(s). RF Resistance. ber and bei.xmcd (200kb) downloaded 15 time(s).Having difficulties transferring the RF resistance sheet from MC15. The ber, bei functions are missing. I added plugin EFI for Mathcad for the "Jv" (vs. Jn) function but it doesn't appear in the listing of available functions. Attached is the mc file and my attempt to transfer to SMath. I welcome the collabs help to move forward. Sincerely, nasch
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Originally Posted by: nasch The ber, bei functions are missing Check if you can do something from the Smath built-in mwbessl [i,j,k,y] from the f(x) menu.
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Thanks, for your reply. Unfortunately, I do not see "mwbessl..." listed. Maybe something that I need to activate? Is there a certain plugin I need to load?
Thanks, again
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Originally Posted by: nasch I do not see "mwbessl..." listed You may have to install from the plugin list. Click on "Tools", click "Plugins" ... install all. Otherwise, rescue to "Smath Doctors" ... [Martin, Davide ...] Bessel Midwest.sm (9kb) downloaded 18 time(s).
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Rank: Advanced Member Groups: Registered
Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)
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Thanks, again. Unfortunately, the "mwbessel..." function are not defined. I have 23 plugins loaded, all with green check-marks so I think they are all working. "Install all" is not there. Then again, I do not have admin rights (my work PC), so that may be a problem?
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Sorry Collab, can't help + ... hope Smath Doctors catch your pain.
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Try with my portable distribution, see signature. There, the mathlib.dll (mathcad special functions) is installed and the bitness of the executable is adjusted. The screenshot below is from the interactive handbook. You find it using the [?] button in the toolbar in the distribution mentioned above. Goto Plugins> EFI for SMath Studio> Special functions. |
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,494 Was thanked: 1274 time(s) in 745 post(s)
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Try this. Links: 1. Cephes Mathematical Library. Quote:There, the mathlib.dll (mathcad special functions) is installed and the bitness of the executable is adjusted. mathlib.dll must be uninstalled (removed manually) from the Mathcad EFI plugin. Cephes Mathematical Library contains same functions. Edited by user 30 November 2017 22:11:25(UTC)
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Russia ☭ forever Viacheslav N. Mezentsev |
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 10/11/2010(UTC) Posts: 1,494 Was thanked: 1274 time(s) in 745 post(s)
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Russia ☭ forever Viacheslav N. Mezentsev |
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Rank: Advanced Member Groups: Registered
Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)
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Many thanks! "Jv" is now defined. But "arctg" is not. Another plugin?
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,648 Location: Italy Was thanked: 1329 time(s) in 875 post(s)
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Originally Posted by: nasch Many thanks! "Jv" is now defined. But "arctg" is not. Another plugin? Name of trigonometric functions depend on the function naming type in global settings of your smath studio; in your case you should look for atan |
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
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Rank: Advanced Member Groups: Registered
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Thank you! Now it computes, but the value; Rac(100kHz) is negative. Should be 141.553Ohm/Mi. I need the "angle" function definition from Mathcad. angle(x, y) Returns the angle from the x-axis to a line containing the origin and the point (x,y). Results are in radians between 0 and 2π, excluding 2π.
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Originally Posted by: nasch angle(x, y) NFG ... arg(1+1*i)=45°
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Using an old MC definition I obtained a better value:
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Originally Posted by: nasch Using an old MC definition I obtained a better value: These two documents may be of interest next blue moon. Mostly if you need accurate Γ(x) ... Smath built-in ± 4/5 D Cheers ... Jean Bessel JY.sm (65kb) downloaded 20 time(s). Maths Special Gamma(x) 15D.sm (76kb) downloaded 19 time(s).
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Rank: Advanced Member Groups: Registered
Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)
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Rank: Advanced Member Groups: Registered
Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)
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Thanks again for the collab's help. The work sheet displays the same result as MC. AC-DC Resistance Using Bessel Functions.sm (13kb) downloaded 7 time(s).Now I have a fault using a modified sheet that the "Result is above max. allowed positive number." . The limit for Rac(f) is 9.3MHz, then the error shows. The result should be 219 micro-ohm/cm. Why the limit? nas Bellow Equiv Resistance.sm (15kb) downloaded 11 time(s).
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Originally Posted by: nasch The result should be 219 micro-ohm/cm. Why the limit? Here, it says ... Jv(,,) not defined.
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I understand the skin effect from my > 50 years back Electronics. What I don't understand is the so complicated route to Ohms/MHz. If you could tabulate some values of that Oms/MHz, I will attempt a model fit ... something like I did for ITER [Cadarache].
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,648 Location: Italy Was thanked: 1329 time(s) in 875 post(s)
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Originally Posted by: nasch Now I have a fault using a modified sheet that the "Result is above max. allowed positive number."
Something triggered in the factorization of the ratio be(...)/be'(...) you can make it working with a trick |
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
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