▼ Menu

    
Extras ▼

The CV4028 gas discharge voltage stabiliser is the UK Government version of the commercial 0B2WA B7G voltage stabiliser and both designations appear on the envelope indicating a direct equivalence.

The regulation of this tube was 3 Volts for currents of between 5 and 30 mA. The CV4028/0B2WA is a special quality version of the commercial 0B2 and the regulation is tighter at 3 volts. The CV1833 is the CV version of the 0B2.

The striking voltage for the 0B2WA is 133 volts.

The KB/D identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the D identifies the maker as Mullard Radio Valve Co., Mitcham.

The thin glass tube envelope is 19 mm in diameter and, excluding the B7G base pins, is 58 mm tall.

Reference: Data-sheet. Type CV4028 was first introduced in 1955. See also 1955 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.