> If you want minimum energy loss overall then -
>
> Best     Switching regulator
> Next    Linear series regulator with ultra low dropout voltage
> Worst    Shunt regulator (zener etc)

I could be missing something here but the quiescent current for voltage
regulators are too high for my purposes (200-300uA).  I could find one low
dropout regulator from Linear technology LT1512 with 12uA.  Although this
will be a perfect solution for another application that I have in mind, not
for this one.

The best thing would be for me to test what happens with a diode and another
test with zener diode.  Well, that's for tomorrow (9:32pm here).

:)

regards,

Omer

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