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E728

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ID = 53945
       
Country:
Great Britain (UK)
Brand: English Electric Valve Company Ltd. (EEV); Chelmsford
Developer: English Electric Valve Company Ltd. (EEV); Chelmsford 
Tube type:  Numerals- and Symbols indicating tube   Indication 
Identical to E728
Similar Tubes
Other shape (e.g. bulb type):
  E727

Filament
Description Displays 145 x 80 mm alpha numeric characters on rectangular screen.

Single supply of 12V with internal conversion for power. Operation is from 5V logic signals at <10µV per segment. 

Information source - - Manufacturers Literature   EE Catalogue 1978
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