MOTM

At 3:45 PM -0400 4/18/03, <groovyshaman@...> wrote:
>
>I've seen some CP131A's on evilbay 'new-in-box' for cheap.  Worth it?  Hmmm...
>Need to beware of date codes since those $$$ Mallorys might need replaced
>(especially if 'new-in-box').  In my opinion, too much 5V and not enough 15V,
>even if it works.  (Boy, wouldn't it be bliss to have enough 500/600 modules
>for 8A of current draw!?!)

Well, it looks like I might have 12A of 5V!!  Still, I don't want to
buy it from Egads.  Power supplies are nothing to monkey around with.

>I've gone two separate supplies route:
>HCC15-3-A: +-15V@3A (got off evilbay for $25)
>HC5-6/OVP-A: +5V@6A (still looking..)

Since I'll have to replace current supply for +/-15 anyway, I might
as well buy a triple supply.

At 2:53 PM -0500 4/18/03, Paul Schreiber wrote:
>
>>   So what's the advantage of the CP131 over the HCBB-75??
>
>Allied stocks them, and they are 1 mile from my house.

I didn't think anything in Texas was that close together :)

>  > To get more power at 15V, the next step up is the HDCC-150W-A
>>  (+/-15V@3A, 5V@12A, $170), which seems like overkill.  At most my
>>  system will have about 45 modules (1500/45 = 33ma, which seems about
>>  average).  Any thoughts??
>
>Remember, you DO NOT want to get anywhere near the upper limit of 
>these supplies. The heat gets
>to be too great if you get within say 90% of the rated output. Plus, 
>that rating is for "average
>AC input", not high line (in the US, the AC wall voltage can vary 
>from 90VAC to about 132VAC).
>
>80% of the stated current is the upper limit you should draw.

So I guess that's the HDCC-150W-A.  Which is one big ass honking 
power supply -- it takes a 3U case!!