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Old 17th Aug 2019, 8:40 pm   #5
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: Osram Music Magnet 4

The bitumen has been removed from the laminations and casing and the former made. It fits the laminations but will need a bit of filing down as it's too wide for the can. Seems the design didn't make full use of the available space. Next step is to recover a few metres of wire so I can measure the resistance/metre.

I also seem to remember there is a method for calculating the depth of a winding which I would like to use to estimate the number of turns on the existing coil once I know the gauge from the resistance. Anyone know where I can find it?
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