16 Jun
2016
16 Jun
'16
3 p.m.
On Wed, Jun 15, 2016 at 06:15:30PM -0400, James Knott via talk wrote:
At work years ago, we had "no break power", where incoming AC ran a motor connected to an alternator and an 8 ton flywheel. When the power failed, a clutch would kick in the diesel, with the flywheel maintaining the power, while starting the diesel. One problem though was the output AC frequency was slightly low and threw off the real time clocks in the computers.
Who built a computer that cared about AC frequency to drive the real time clock? Never heard of anyone doing that. Must have been a large machine given all microcomputers are fed DC from their power supply and have no clue nor care what the AC frequency was. -- Len Sorensen