PULVELEC MEDICAL INDUCTION COIL, 1930's

Coil for medical use.
They work by two coils, one with a smaller number of turns but of greater size of wire, surrounded by another of much greater turns but of smaller diameter wire, inside the centre winding is a core of iron at the end of which is a piece of metal, attached to a make and break contact which interrupts the supply to the centre winding, exactly as in an electric bell.
The result is an transfer of power from the centre winding to the outer, with a proportional change in voltage to the number of turns, i.e from a small voltage you can create a very high voltage, but at much lower current.

Your comments:

• I have a box identical to this, it was always in our old cellar when I was growing up in the 1940 s 50 s. When we cleared out our parents home in the late 1980 s it came into my possession without the electronics. Fifteen years ago I refurbished it and it now holds compact discs.
  .......... Philip George, Highbridge, SOMERSET. ENGLAND., 15th of October 2015
  
  

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