IBM 4331 Mainframe
paulkoning at comcast.net
Mon May 1 07:42:26 CDT 2017
> On May 1, 2017, at 12:38 AM, Guy Sotomayor Jr via cctalk <cctalk at classiccmp.org> wrote:
> Just to let folks know that I finally moved the IBM 4331 Mainframe this past weekend
> from where it was currently stored to my shop. Pictures are here:
> https://www.flickr.com/gp/150223282@N04/NrX91K <https://www.flickr.com/gp/150223282@N04/NrX91K>
> As can be seen in the pictures, it filled a 26’ box truck that I had rented for this purpose.
> Right now I just have it placed somewhat in my shop. Some early tasks will be:
> * I have to verify that I have everything. Even if I missed some items, they won’t be
> scrapped. I just need to go over what is currently in my shop and verify that I didn’t
> leave anything behind. I’m mostly worried about cables at this point.
> * I have to figure out some way to produce enough “clean” 3-phase power to run the
> peripherals (the CPU is 220v single phase) as I only have 220v single phase coming
> into my shop.
What do they use 3-phase for? Motors? I remember disk drives with 3 phase motors. If so, a VFD is a good low cost solution since those are specifically designed for driving motors.
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