50Hz vs 60Hz fixed drive speed ?

From: Tom Uban <uban_at_ubanproductions.com>
Date: Tue Feb 17 14:57:12 2004

A friend and I were discussing 8" floppy drives recently, in particular
that they often have two pulley sizes so that the rotational speed is
360rpm regardless of 50Hz or 60Hz operation, assuming that they are
setup properly.

The question then turned to whether or not a fixed hard drive would
typically be designed in a similar fashion, such that the spindle
would rotate at the same number of RPM when configured for 50Hz or
60Hz operation, or if they did not worry about the speed differences
as the media was not removable?

Of course todays modern hard drives are driven with DC motors, so
they are not affected by the A/C frequency differences.

Does anyone know what manufacturers routinely did on this account?

--tnx
--tom
Received on Tue Feb 17 2004 - 14:57:12 GMT