Links to calculation pages

[Silvio Klaic]

Here is the list of other useful pages with information on transformer calculation which I collected over the years.
So if you want go in depth looking in calculations, try with these ones:

General
http://www.youtube.com/watch?v=a4pxpG83LUY
http://en.wikipedia.org/wiki/Transformer_types
http://en.wikipedia.org/wiki/Transformer
http://en.wikipedia.org/wiki/Magnetic_core
http://www.smps.us/magnetics.html
http://www.allaboutcircuits.com/vol_2/chpt_9/7.html
http://info.ee.surrey.ac.uk/Workshop/advice/coils/terms.html

Laminated-iron core
http://sound.westhost.com/xfmr.htm
http://www.valveheart-bg.com/theory/transformer.html
http://openbookproject.net/electricCircuits/AC/AC_9.html
http://en.wikibooks.org/wiki/Electronics/Transformer_Design
http://hyperphysics.phy-astr.gsu.edu/Hbase/magnetic/transf.html
http://hyperphysics.phy-astr.gsu.edu/Hbase/magnetic/tracir2.html
http://www.giangrandi.ch/electronics/trafo/trafo.shtml
http://scialert.net/fulltext/?doi=ajsr.2013.122.128&org=11
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660001049_1966001049.pdf
http://www.epanorama.net/documents/components/transformers.html

Ferrite ceramic core
http://www.bcae1.com/trnsfrmr.htm
http://www.66pacific.com/calculators/toroid_calc.aspx
http://users.catchnet.com.au/~rjandusimports/index.html
http://www.mag-inc.com/design/design-guides
http://www.poweresim.com/Xformer/Select_Application_Front_Page.jsp
http://www.epcos.com/web/generator/Web/Sections/DesignSupport/Tools/Ferrites/Page,locale=en.html
http://schmidt-walter.eit.h-da.de/smps_e/smps_e.html
http://www.lodestonepacific.com/distrib/pdfs/Magnetics/Design_Application_Notes.pdf
http://www.actown.com/download/Catalog/Oem_Design_Guide.pdf

Air core
http://colomar.com/Shavano/inductor_info.html
http://hamwaves.com/antennas/inductance.html

[Bob]

silvio, where can you buy the lamination iron to make the cores for a transformer?

[Bob]

Silvio,
    do you have the transformer calculator in 64 bit? 

[Silvio Klaic]

Original program is 32bit and there is no 64bit version.
New program will work on any operating system.

silvio, where can you buy the lamination iron to make the cores for a transformer?

Usually you can buy from transformer manufacturer or you can dismantle some old/burnout transformer and use core from it.

[mbe200]

Hi Silvio
Nice work on your website.
You did a lot of work.
I tried to download the program but unfortunately it does not work on my lap top due it is 64 bit
It is possible to give me at least the workings to calculate at least the power from core cross-sectional area.
I  thank you for your time and for sharing
best regards
Charles
mbe 200

[Silvio Klaic]

Formula for power of core is cross-sectional area squared: P=S²
Where P is power in watts for 50/60 Hz, S is cross-sectional area in cm²

Because many have problem with installation of my calculator on 64bit, here is archived installed version: transformer01.zip
Download it and unpack to C:\Program Files
You may run it on compatibility mode for Win XP.

Hope it helps.

[mbe200]

Hi Silvio
You did it again. I think congratulations are in order. Than you for the power formula and the zip file. Now the calculator work fine. Is it correct to think that the power formula CSA squared is for normal steel laminations. If it is so what happens when one uses an Amcc core. I am experimentind with an Acc core 320  CSA is 22mm x 50mm (11cm square)
Thank for everything and nice to chat with you.
Best regards

[Silvio Klaic]

Yes, given formula is for steel laminated cores at frequency of 50-60Hz.
If you change frequency or core material, that formula no longer apply.

The best solution is to find detailed specification of core material from manufacturer.
You can also test core to see how it behaves, but that is far more expensive.

[ahmed115]

Hi
please what is the Equation u use between the output power of the transformer and the cross section area of core ?

[Silvio Klaic]

Equation is: Power=(With * Height)²
With and height of core cross section are in cm, power is in Watts.

[Brandon]

Is a useful calculation