Re: Two more silly II questions...

[glen herrmannsfeldt <gah@ugcs.caltech.edu>]

zwsdotcom@gmail.com wrote:

> On Aug 23, 4:29 am, glen herrmannsfeldt <g...@ugcs.caltech.edu> wrote:
(snip)

> Sure, but the reason I want to do this is because I have more IIcs
> than power bricks, and I have a _LOAD_ of 5A, 12~18VDC power supplies
> (they are switchers, internally adjustable - they originally came with
> LCD monitors).

OK, I was remembering the II power supplies, which I believe
were more ordinary switching power supplies.  The usual one,
like 99.9% of the PC power supplies, starts by converting the
input to 300VDC, either through a bridge rectifier for 220V in,
or a voltage doubler for 120V in.  That goes through the switch
transistor into a ferrite core transformer.  That allows 400W or
500W power supplies to be so small and light.


For lower power output, it isn't so hard to do from 12V input.

-- glen