[email protected] (glen herrmannsfeldt) wrote:
(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.
The print train (or chain, depending on model) in 1403s was direct
driven. The vertical motor shaft was keyed to the print train.
If the motor speed were to change, the hammer flight timing set in the
2821 control unit would be far off, resulting in the printing of partial
characters at best. Whether they compensated for this with motor
wiring, a different motor, or different flight timing settings, I have
no idea. (The factory took care of that stuff!)
I don't recall any gears in the 1403, so it would be interesting to know
where any were that got changed for operation at 50Hz. Are you sure
they are gears and not hydraulic unit drive belt pulleys?
<snip>
--
John Eells
z/OS Technical Marketing
IBM Poughkeepsie
[email protected]
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