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CV1790

Sensibly equivalent to:
7Z4 CV346
    
Extras ▼

 

The CV1790 is a full wave rectifier on a Loctal base. The commercial equivalent is the 7Z4.
The KB/FB identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the FB identifies the maker as STC, Footscray.
The getter holder is fixed to one anode support rod. The substantial anode support rods are welded to the substantial base pins.
The wide glass tube envelope is 28 mm in diameter, and excluding the B8B base pins is 62 mm tall.
References: Data-sheet & 1040. Type CV1790 was first introduced in 1948. See also 1948 adverts.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
h
nc
a(1)
nc
nc
a(2)
k
h

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
6.3
0.9
450
100
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 27, 2024.
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