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how do you set a "simplex" WALL CLOCK that has syncronous 110 volt motor?
This is a large wall clock like the ones in school. When I first plug in the clock the minute hand and the second hand turn together untill it hits six oclock. Then it resets and assumes regular movement. It has a lever in back to make it do this. It has a sycronous 110 volt motor in it, but I am having problems getting this thing set up. Any help out there?
2 Answers
If this is the type of clock I think you are referring to I think you have a "Slave" clock. Schools and businesses used these in the 50's and Early 60's and they required one or more "Master" clocks which synchronized the slave units. The Master was usually the one in the "Office" which was set manually and the others synchronized to it by advancing the time about one minute per second until it displayed the correct time. I don't know if there was a way to manually override the time on the slave units. Your description makes me very suspicious that it is not possible.
Bert
Bert
I work in a hospital and we have the same clocks. These clocks are operated from a central controller. A simplex clock is of no use without the controller which in our case receives a signal based on the atomic clock.
Just a fun fact: utility companies have to average exactly 60 hertz over a 24 hour period in order to keep your plug in clocks accurate.
Just a fun fact: utility companies have to average exactly 60 hertz over a 24 hour period in order to keep your plug in clocks accurate.
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