(snip, someone wrote) >> I don't know power consuption, but nowadays it's not hard >> to get semiconductor-based power supply which generater 60Hz >> or 50Hz or any value you want (within some range).
(snip, someone else wrote) (sorry for losing the attributions, I am copying from usenet) > I suppose a 1403 requires a couple kW. That shouldn't be an obstacle: Yes, but an added complication. >From one 1403 manual, I see some gears that are specified for 50Hz and for 60Hz, but I am not sure what they do. As far as I can tell, the train is powered by a synchronous motor (or close enough). I presume you don't want the train running 1.2 times as fast. I suspect that only synchronous motors need to run off a power converter, which would allow for a smaller converter, but more complication in wiring. > https://en.wikipedia.org/wiki/High-voltage_direct_current > CDC equipment circa 1970 used 400 Hz with rotating mechanical > converters. As I understood it at the time, larger S/360 and S/370 also used motor-generator power supplies, though I don't know the output frequency. The higher frequency means less filtering. But yes, you can run a CDC machine off an electronic converter. > Provided considerable immunity to power surges. Flywheels? -- glen ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
