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CV284

Sensibly equivalent to:
75B1 CV5083 QS75/20 STV70/20
    
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The CV284 is a voltage stabiliser producing an output voltage of 75 Volts.
The data-sheet describes pin 4 as either connected to the anode or to a priming anode and in this exhibit it is connected to the anode.
The priming anode is provided when the circuit design involves connecting the CV284 to a permanent heavy load shunting the stabiliser. In any case pin 4 should be connected to the other anode pins via a 15 kΩ resistor.
Our other CV284 has mica discs, this one has two sets of heavy ceramic discs as well as mica discs. This is unusual for a 75 Volt stabiliser.
The thin glass tube envelope is 18 mm in diameter, and excluding the B7G base pins is 45 mm tall.
Reference: Data-sheet. Type CV284 was first introduced in 1954.

 

Pin Connections
B7G
1
2
3
4
5
6
7
k
k
k
pa
a
a
a

 

Absolute Maximum Operating Conditions
Stabiliser
Va
75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated May 19, 2020.
shape:thin.glass.tube construction:all.glass type:voltage.stabiliser age:1950.1960 base:b7g pins:7 pin:1.k pin:2.k pin:3.k pin:4.pa pin:5.a pin:6.a pin:7.a
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