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E2178

 
    
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The E2178 is an experimental development valve from M-OV. It is an indirectly heated half wave rectifier.
The anode is blackened and formed into an X shape. The cathode tube is oxide coated.
The anode is folded from a single strip and the join is shown centre screen.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 62 mm tall.
Reference: Observation.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
-
-
k
h
h
-
-
-
a

 

Updated April 06, 2019.
shape:thin.glass.tube construction:all.glass type:rectifier.hw base:b9a pins:9 pin:1.- pin:2.- pin:3.k pin:4.h pin:5.h pin:6.- pin:7.- pin:8.- pin:9.a
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