"Our front cover picture illustrates an early stage in the manufacture of tungsten wire at the Mullard
After a complicated series of chemical processes, the coarse raw material, natural calcium tungstate, is converted into paratungstate.
In the picture, this is shown on trays before drying in a vacuum oven. After a further series of precisely controlled processes, a handful of this powder is transformed into miles of fine tungsten wire, every inch of which conforms to the most exacting standards.."
|Technical Contents :||Mullard World Series of Valvs for Television (pt.2) - ECL80
Valve Manufacturing Technique (Pt.2) - Manufacture of Yungsten Wire
Cathode Ray Tube Testing in the Service Department
Fitting Mullard Ion-Trap Picture Tubes
Valves in Modern Cinema Equipment
|Download as a PDF File (850K)|
|Page copyright ©
|CLICK HERE TO RETURN TO
THE MULLARD OUTLOOK PAGE
20th December 2010