Re: 3phase power for VAXen [was Re: VAX 780 on eBay]

2022-01-04 Thread Charles Dickman via cctalk
On Tue, Jan 4, 2022 at 5:17 PM Rich Alderson via cctalk < cctalk@classiccmp.org> wrote: > > We did not have a 3phase outlet on the second floor of the building where > the > collection was housed, and there was no room for the first VAX in the small > computer room on the third floor, so Ian and K

Re: 3phase power for VAXen [was Re: VAX 780 on eBay]

2022-01-04 Thread Chris Zach via cctalk
On 1/4/2022 5:17 PM, Rich Alderson via cctalk wrote: I've been reading this thread for the last few days, without the time to reply. All the statutes of limitations have run out, so I can tell the story; it will be clear shortly why I'm piggybacking on Guy's post. Someday we will all gather aro

Re: 3phase power for VAXen [was Re: VAX 780 on eBay]

2022-01-04 Thread Rich Alderson via cctalk
> Date: Tue, 04 Jan 2022 14:44:00 -0800 > From: Van Snyder via cctalk > On Tue, 2022-01-04 at 17:17 -0500, Rich Alderson via cctalk wrote: >> Paul Allen wanted me to acquire a VAX-11/780 for his >> collection > John Zabolitzky has an operating VAX -- I don't know the vintage -- > eleven cabinets

Re: 3phase power for VAXen [was Re: VAX 780 on eBay]

2022-01-04 Thread Matt Burke via cctalk
As the owner of a VAX-11/780 I can confirm what Guy says about the 866 power controller. This is the only component that needs 3-phase power. There is a small 3-phase transformer inside that provides 24V DC to the control circuitry. The power controller not only interfaces to the DEC power control

Re: 3phase power for VAXen [was Re: VAX 780 on eBay]

2022-01-04 Thread Van Snyder via cctalk
On Tue, 2022-01-04 at 17:17 -0500, Rich Alderson via cctalk wrote: > Paul Allen wanted me to acquire a VAX-11/780 for his > collection John Zabolitzky has an operating VAX -- I don't know the vintage -- eleven cabinets, in his collection in Neubiberg, a southeastern suburb of Munich. He also has