29 Dec
2009
29 Dec
'09
6:40 p.m.
On 12/27/09 10:39 AM, g-wright at att.net wrote:
Sorry Al, No manuals or software. Just reminded me I
need
External Power Supplies
Does any ine have the external power supplies for the B38.
These where large "floor warts"
It seems like there are a bunch of 36v switchers available on eBay.
I've found a few of the bricks, but none of the not-quite standard
modular cables. You're probably better off just cutting off the cable
and tacking two wires in its place. The power is bussed across the
backplane, so you could probably get by running a cpu and disk from
a single 9A switcher. From what I've read in old NGEN mail, the little
Aztec switchable 5/12v modules inside weren't very reliable either.
You can't just get rid of the 36v, though, since that's what powers
the monitor.
I a copy of the patent for the NGEN power supply system (453073) is
on bitsavers. Also found a few other useful ones, like how the X-Bus
and SCSI bus work.