VAX 11/780 - test-drb@ccmp.vtda.org

7 Apr 2013

I put information on converting an RP06 to 220VAC single-phase here:

https://sites.google.com/site/mthompsonorg/Home/pdp-10/rm03-and-rp06-inform…

From: John Wilson <wilson at dbit.com>
...
  To: "General Discussion: On-Topic and Off-Topic
Posts" <
 cctalk at classiccmp.org>
 Subject: Re: VAX 11/780
 On Fri, Apr 05, 2013 at 08:18:20PM -0500, Jon Elson wrote:

...
  The RM07 also
was 3-phase, I think all the smaller VAX 780
disks were single-phase. 
 RM02/03/05/80 are definitely single-phase.  RP07 is 3-phase as you say,
 as is RP06 and I assume therefore RP05.  Dunno about RP04.

 The RM07 was a total monstrosity
from Burroughs, I hope you don't have one of those.  We went through
a lot of pain as one of the early adopters of that, but in the
end it was a high performance drive and fairly reliable. 
 I've heard you have to pop the RP07's top whenever it's running or it
 overheats...  otherwise good though, and huge for the time.

 John Wilson
 D Bit

-- 
Michael Thompson