> Is this the circuit you were referring to in the thread "tiny power
> supply"?

No. But it's going in the right direction.
My circuit is substantially simpler and cheaper.
Probably also lower performance in some areas but maybe not.

Will post shortly - lets see what else comes up first. I hoped for more
ideas than we have seen so far.




        Russell



> > OK - here's a solution that has been suggested by a friend from the
> NatSemi
> > LM336 regulator diode data sheet
> >
> > Without going back to my original cost list I estimate that this is
> about
> > 130 to 150 units cost. (Under $US1 probably with substitutions
> below). Not
> > too bad.
> > I've pretended that the LM336 here can be substituted with a low
> cost zener
> > diode - if not the price is significantly higher.
> > I've assumed that all transistors can be low cost general purpose
> ones BC337
> > / BC327 as the power level specified in my challenge is low.
> > Also, the output catch diode could be a 1N4148 ! - not what you
> would
> > normally see in this role but again, the power level is low.
> >
> > Any improvements on this?

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