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Old 16th May 2021, 2:50 pm   #18
Heatercathodeshort's Avatar
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 8,308
Default Re: Metamec A909 clock- broken coil

Good thought Graham but the wire is too thick. To give some idea this picture shows a thread of the thinnest cotton I could find compared with the gauge of wire I have used for gramophone pick ups. The wire used to wind the clock coil is around 50% thinner! Quite how they manufacture it is a miracle.
Obviously a clock has to be the lowest possible consumption. I guess this will be around 3w and any wire thicker than this will consume a considerably higher current over a year. J.
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