[time-nuts] Re: Power line timing -- setting a clock

[Peter Reilley]

In the plants that I installed they had a synchroscope and two light bulbs.
The both performed the same function.
You normally used the synchroscope because it was more accurate.
The light bulbs there sort of an anachronistic backup.   In the real
old days they used the light bulbs the synchronize the generator.
There were two bulbs connected in series because the voltage
sensing transformers output 120 volts.   When the system and
the generator were in phase the bulbs would go out.   When they
were out of phase the result was 240 volts at the bulbs thus you
needed two in series.   Yes there are 240 bulbs but 120 volt
bulbs are cheap and available.


On 3/22/2024 6:46 PM, GEO Badger via time-nuts wrote:
>   They also used light bulbs. When they were dark, the phases matched.
> Many went to a synchroscope.https://en.wikipedia.org/wiki/Synchroscope
> I have a hertz meter in my shack. It measures between 55 - 65 Hz with divisions of 5 that are pretty widely spaced.
> ---
> Ciao baby, catch you on the flip side
> 73 de W3AB/GEOAFA9GB
>
> WA2LSI, KE6RJW, W6B, W7B, AAR9AG
> http://www.w3ab.org
>
> Summers fly by,winters always walk
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe send an email to time-nuts-leave at lists.febo.com