[GTALUG] mysterious restarts

[James Knott]

On 06/16/2016 03:47 PM, Lennart Sorensen wrote:
> On Thu, Jun 16, 2016 at 11:55:53AM -0400, James Knott via talk wrote:
>> > Data General Nova & Eclipse computers had a choice of AC power or
>> > various clock rates derived from a crystal.  The crystal wasn't all that
>> > accurate, but normally AC is.
> It would be pretty accurate for sure.
>

Forgot to mention, the fix for the slow clock on no break power was a
relay that connected the clock circuit to a transformer that supplied
low voltage AC.  When the power failed, the relay dropped and switched
the clock back to the no break power.  This way the clock stayed
accurate, so long as there wasn't a significant power outage.