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CV1111

Sensibly equivalent to:
19G/12 AU5 R11 U27 V1907 VU111
    
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The CV1111 is a high vacuum half wave rectifier. The prototype was the V1907.
The maximum PIV is 14 kV and so the anode has the extra insulation afforded by the ceramic inserts into the mica discs.
The oxide coated filament has three loops with each held taut by a coil tension spring.
A closer view of the filament. The distance between the filament and the anode is large due to the high voltages.
The classic envelope is 50 mm in diameter, and excluding the B4 base pins is 126 mm tall.
Reference: Datasheet.

 

Pin Connections
B4
1
2
3
4
tc
-
-
f
f
a

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
1.1
5,000
50
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 25, 2019.
shape:classic construction:pinch type:rectifier.hw age:1930.1940 base:b4 heater:4.0v pins:4 pin:1.- pin:2.- pin:3.f pin:4.f pin:tc.a
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