ard at p850ug1.demon.co.uk
Thu Apr 14 18:20:53 CDT 2005
> > I got a DEC H734A power supply
> >From the option/module list, it's a "19 x 10.5 inch, +15V 12A,
> -15V 12A, AC LO, DC LO, 120V, Remote/local DC PWR, RK02,03".
Ah, that explains something. When I got my 11/45 (my first PDP11), it
came with an RK11-C and a pile of printsets. Amongst them was the H734
printset. I never had the PSU, or knew why it was stuffed inside the
RK11-C prints. I assume at one point it was used with RK03s...
The RK02/03 is, are, of course, Diablo Model 30 drives. The Diablo PSU
uses a ferroresonant transformer for regulation. DEC used transistors.
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