The Mercury Switch Regulating Transformer. TR.4. 1933.

Made:
1933
maker:
Ferranti Ltd
and
Norris, E. T. (M.I.E.E.)

Reprinted from "The Electrician" June 16th, 1933.

Details

Identifier:
YA1996.10/9/4/3/60
Subject:
Electrical Industry, Transformer