Transformers (D+75)

  D+75+0 Demountable transformer with many secondary coils from 10:1 to 1:46.
  D+75+1 Same as above: Secondary used for spot-welding.
  D+75+2 Same as above: Secondary used for induction melting.
  D+75+3 Same as above: Secondary used for small Jacob's ladder.
  D+75+4 Large Tesla coil. 15 inch discharge.
  D+75+6 Automobile coil makes a spark.
  D+75+8 Large Jacob's ladder.