Roman, I was affraid last week, you've gone in winter hollydays...
like Olin...

Cheers, Vasile

P.S. sure is not a copy of yellow.jpg ?

On Fri, 7 Dec 2001, Roman Black wrote:

> Hi, i've finally put that circuit and pictures up for
> the super cheap 2-transistor switchmode 5v regulator
> that Richard and Russell and many others contributed to
> a few weeks back.
>
> There are a couple of charts of efficiency and regulation,
> and the circuit and CRO waveform. Also a great picture
> of my quick coffee-table "lab setup" ha ha! :o)
>
> It's all public domain and may be of use if you need
> to run a 5v or 4v PIC from a battery with double or
> triple the efficiency of a 7805 linear regulator, and
> on a very tight budget. All parts are discrete and
> non-critical, even the inductor, so you can use any
> cheap mass produced pre-wound inductor and still
> get good results.
>
> Here it is:
> http://centauri.ezy.net.au/~fastvid/smps.htm
> (there are a few small pictures, about 200kb
> total)
> -Roman
>
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