[NJARC] Switching supplies

[Mbeeferman at cs.com]

In a message dated 5/28/2007 3:14:07 PM Pacific Daylight Time, 
edotte at optonline.net writes: 
> Does anyone have a neat little schematic for a switching power supply 
> replacement for a battery? I see many "portables" had 90 V or 100V batteries and I 
> figure they may have drawn up to 400 milliamps. 
I saw exactly what you are looking for in a recent article but for the life 
of me, I can't remember the source...Radio Age, ARC, ??? Can anyone out there 
help?  Anyway, I'll keep looking.