7 Oct
1999
7 Oct
'99
5:30 a.m.
On Thu, 7 Oct 1999 allisonp(a)world.std.com wrote:
Usually, (I know of no exceptions) if it runs on 50hz
it runs on 60.
Weren't there a few S-100 boxes that used ferroresonant transformers in
the PSU? Plugging a device with a ferroresonant transformer (a
transformer+inductor combination that is quite well regulated but very
dependent on input frequency) into an incorrect frequency power source is
likely to yield unpleasant results.
Although ferroresonant transformers are relatively uncommon (except in
UPSes and line conditioning systems), the possiblity of encountering a
ferroresonant transformer in the PSU is a good reason to be careful when
powering up an unknown box on the "wrong" frequency for the first time.