Application of Zero Grid Current Vacuum Tube Voltmeter to Measurement of pH with Glass Electrode

1955 ◽  
Vol 27 (6) ◽  
pp. 1004-1007 ◽  
Author(s):  
Samuel Natelson
Keyword(s):  
Glass Electrode ◽  
Vacuum Tube ◽  
Grid Current ◽  
Tube Voltmeter

Design of a High Impedance Vacuum Tube Voltmeter for Use in the Radioisotope Laboratory

Radiology ◽  
1966 ◽  
Vol 87 (2) ◽  
pp. 357-358
Author(s):  
Carl R. Bogardus ◽  
Seymour H. Levitt
Keyword(s):  
Vacuum Tube ◽  
High Impedance ◽  
Tube Voltmeter

A Low Grid-Current Vacuum Tube

1930 ◽  
Vol 36 (9) ◽  
pp. 1489-1494 ◽  
Author(s):  
G. F. Metcalf ◽  
B. J. Thompson
Keyword(s):  
Vacuum Tube ◽  
Grid Current

A Line-Operated Vacuum-Tube Voltmeter

1935 ◽  
Vol 7 (5) ◽  
pp. 341-342 ◽  
Author(s):  
R. L. Garman ◽  
M. E. Droz
Keyword(s):  
Vacuum Tube ◽  
Tube Voltmeter
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