Miscellaneous: RAYTHEON B-H TYPE B VALVE, 1930's
RAYTHEON B-H TYPE B VALVE, 1930's
Raytheon BH type B Cold Cathode Rectifier.
This valve has no heater.
©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No.
1140352, Accredited Museum No. 2221