Virtual Valve Museum

Virtual Valve Museum

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CV2012 voltage reference tube

Size The valve measures 53x17mm overall and has 7 connections plus one to the central spigot.

This valve is a CV449 with tags welded to the pins and fitted with a special disc. In fact the valve is marked CV449 which is crossed out.

Max striking voltage 115V
Normal stabilised voltage 85V
Recommended operating current 6mA
Max cathode current 10mA
Min cathode current 1mA
Max incremental resistance (Ia=6mA) 450 ohm


Pin Function
1 Anode
2 Cathode
3 Internal connection
4 Cathode
4 Anode
6 Internal connection
7 Cathode


Quarter view