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Old 14th Jul 2022, 9:50 am   #1
Join Date: Oct 2016
Location: Darlington, County Durham, UK.
Posts: 315
Default Old coil switch thing. Identified as a Ruhmkorff induction coil.

Hello all, just bought this because Iím not sure what it is (itís becoming a habit!)

Its base is about 50mm x 125mm, the coil connects to two terminals at the top of the bobbin (one is broken off/missing)

It is not a solid base, it has a removable wooden base (not yet removed)

There is a Ďtrapezoidal?í switch at the bottom (broken and screw missing)
I would have thought that when the coil was energized it would break the connection between the vertical posts, one with spring and one with adjuster, but they are permanently connected.

I was told it was a Morse key, but obviously not

Any ideas?

Many thanks Philip
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