> On May 1, 2017, at 12:38 AM, Guy Sotomayor Jr via cctalk > <cctalk@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. paul