Nokia ACH-6A charger schematic wtd

[me]

These little 10volt SMPSU chargers are most abundant, and I'd like to
figure out a way to convert them to other voltages (6 for instance).
Anyone got a schematic ?
(It doesnt seem to be the normal TL431 sort of regulator)
cheers
Mike
mobyATkcbbsDOTgenDOTnz

 

[Piotr Piatek]

These little 10volt SMPSU chargers are most abundant, and I'd like to
figure out a way to convert them to other voltages (6 for instance).
Anyone got a schematic ?
(It doesnt seem to be the normal TL431 sort of regulator)

Perhaps an LCH-6 schematic would help? It's available here:

http://www.pisi.com.pl/zbedne/lch6.jpg

To change the output voltage the 10V smd Zener diode (SOT23 package)
needs to be replaced.

-Piotr