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 13th August 2006, 01:12 PM #1 jarthel   diyAudio Member   Join Date: Jan 2002 Location: somewhere in Australia does anyone know how to add a transformer in orcad capture? could you also tell me how to customize it? primary is 230VAC secondary is 9V 5.5A. I am currently using XFRM_LINEAR and I'm confused. I can only change it's inductance and I do not how it relates to the winding voltage rating. Thank you for the help.
 13th August 2006, 07:20 PM #2 sawreyrw   diyAudio Member   Join Date: Apr 2006 Location: Minnesota I don't know anything about the XFRM_LINEAR model you are using. However, a transformer is made of coupled inductors on a common core. The following equations apply: Vsec=Nsec*Vpri/Npri Lpri/Lsec=(Npri/Nsec)^2 Using these 2 equations Vsec=sqrt(Lpri/Lsec)*Vpri For your case N=9/230=.0391 and N^2=.00153. Therefore, Lsec=.00153*Lpri
jarthel
diyAudio Member

Join Date: Jan 2002
Location: somewhere in Australia
Quote:
 Originally posted by sawreyrw I don't know anything about the XFRM_LINEAR model you are using. However, a transformer is made of coupled inductors on a common core. The following equations apply: Vsec=Nsec*Vpri/Npri Lpri/Lsec=(Npri/Nsec)^2 Using these 2 equations Vsec=sqrt(Lpri/Lsec)*Vpri For your case N=9/230=.0391 and N^2=.00153. Therefore, Lsec=.00153*Lpri
thank you.

another question:

to add the AC source from the electric company, do I just include "VAC" (from the source library)?

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