The CV2269 sub-miniature wire ended triode was designed to be soldered into the circuit as reliability was deemed to be of the same order as the rest of the components.

The commercial equivalent is the ME1401 from Mullard. The ME range were all electrometer valves with very high input impedances and operating at very low anode voltages. Their applications were as high impedance amplifiers for instrumentation such as photocell amplifiers and pH meters.

The thin glass tube envelope is 9 mm in diameter, and excluding the lead out wires is 41 mm tall.

This exhibit was last updated on 07 January 2007