Re: Apple IIgs 200w Power Supply

["Henry" <apl2research@comcast.net>]

Hello again everyone.

sicklittlemoney: No problem!  More people who can use it the better I 
figured.

bradw:  Sure thing.  I'll set it up any special way you want.  Just email me 
when you order it and I'll make sure it gets done.  I could also have both 
connectors on it.  Also, let me know if there is some kind of a market for 
the converter cables and maybe I'll ad a few to the Site.

Michael:  The only issue with ATX to Apple converter cables would be that 
the user would have to make sure the ATX power supply has a -5v supply line. 
Most newer ATX supply's have done away with it.  That's one of the reasons 
it was so hard to find a power supply that would work, the other reason is 
the
form factor.  The supply I'm using is actually a U1 rack-mount supply, but 
in a "special" footprint.

Bryan: Let's touch on some basic math, just to make sure I'm doing things 
right here.  I'm sure someone will jump in if I make a mistake along the 
way.

The "watt", a unit of power, is calculated by multiplying the Amps by the 
Volts.  So "watt = amp * volt".

A IIe power supply can produce +5v at 2.5a = 12.5w.  And +12v at 1.5a = 18w. 
A total of roughly 30.5w.  I believe the peak wattage to be 35w.

A IIgs power supply can produce +5v at 4a = 20w.  And +12v at 2.5a = 30w.  A 
total of roughly 50w.  I believe the peak wattage to be 60w.

The GSE-Reactive.com power supply can produce +5v at 18.8a = 94w.  And +12v 
at 7.0a = 84w.  A total of roughly 178w.  Peek of 200w.

You should also note that there are two "negative" supply lines on each 
power supply not listed here so the "real" wattage values are really a bit 
higher, but ONLY a little bit like 1 to 3 watts.

Okay, math lesson over. ;)  I'm not too sure what you mean by "new 200 watt 
power supply really heavy power supply?".  If you mean the weight, it 
actually weights a little less then the original supplies since it's a 
"switching" supply and not "linear".  A switching supply doesn't need a big 
heavy transformer like the older supply's do.  They convert the AC from 60 
cycles to a much higher frequency which is much more efficient way to 
convert power.

I'm not too sure about the Vulcan supply's, sorry.

As far a which supply would be "better" I would say the newer 
GSE-Reactive.com power supply.  Besides there being more power available, 
the power will be "cleaner" and better regulated during times when there are 
power issues like brown outs.  Did I mention in built in fans?

Hope this helps.


Henry S. Courbis
www.GSE-Reactive.com