ivp ha scritto:
> Dario, can you guarantee the voltage drop across the diodes as the
> load varies won't affect the circuit ? For example,
> 
> 1N4001 0.7V @ 10mA, 0.75 @ 100mA, 0.9V @ 1A
> BAT46 0.25V @ 1mA, 0.4V @ 10mA, 0.75V @ 100mA
> 
> diode-ORing them followed by an LDO 3.3V regulator perhaps

Thank you:
yes a LDO would be better, have considered it.

Actually, the slight variations in the load (which should actually 
always be in the range 250-350mA), should allow for a 1N4007 diode.


-- 

Ciao, Dario
--
Cyberdyne
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist