Virtual Valve Museum

Virtual Valve Museum

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CV85 trigatron

Size This valve measures 150x70mm overall and weighs around 240g.

The CV85 was the first production trigatron. Available in mid-1942, it was used in the "Modulator 64" to power the CV64 magnetron, superseding twin CV57s.

Trigger voltage 3.0kV
Min working voltage 6.6kV
Peak power output 150kW


Pin Function
1 Trigger electrode
2 Anode
3 n/c
TC Cathode
Top quarter view Bottom quarter view