Homebrew PCBs

And of course don't forget Unitrode's Seminar series at TI's web site

http://focus.ti.com/docs/analog/support/training/seminar.jhtml?templateId=2&navigationId=156&tfsection=Seminar_Materials

or more specific to your application

 http://www-s.ti.com/sc/psheets/slup126/slup126.pdf

Other online teach-your-self sites are to visit ferrite and magnetic materiel
manufactures. Request all the catalogs you can.


Lukas Louw wrote:

> Hi Randy,
>
> Here are a few links for you. It's not that trivial, but there are a few
> rules of thumb that you can use. I have been involved with design switching
> supplies for high power car stereos since 1982, so email me directly if you
> can't find what your'e looking for.
>
> http://www.powerdesigners.com/
> http://www.ogradyeng.com/Pages/frameset2.html
> http://www.powersimtech.com/download.html
> http://www.geocities.com/genomeuk/
> http://www.chipcenter.com/power/powparch.htm
> http://www.national.com/appinfo/power/
> http://www.ee.uts.edu.au/~venkat/pe_html/peintro.htm
> http://www.sonic.net/~sjl/power.html
> http://www.smpstech.com/tutorial/t02top.htm
> http://www.powersupplies.net/
> http://www.smpstech.com/websites.htm
> http://www.fgl.com/pwrapps.htm
> http://www.mag-inc.com/
>
> Have fun......
>
> Regards,
> Lukas Louw
> louw1@...
>
> >
> > Hi:
> > I know this is off the pcb topic but I was wondering if anyone on this
> list knew how to design transformers or where to look to find this
> information out. I am trying to build a 500 watt 100khz switching power
> supply that will bring 12volts to 60 volts. I understand the concept of
> turns ratio but my question is how do I treat the primary of the
> transformer? Do I treat it as merely an inductor whose value I would need to
> calculate? I was also wondering about the magnetic selection of a core. How
> much permeability can I have before I saturate the core using a given power
> level?
> > Thanks!
> > -=Randy Knutson
>
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