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CV1166

Sensibly equivalent to:
220PA AR5 CV548 CV1022 CV1304 CV3620 CV3643 L2 LP220 LP2 NR42 P220 PM2A POVT140 VR22
    
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The CV1166 is a directly heated triode that was used under their own designations by several of the UK services. It was called:- NR42, AR5, VR22, POVT140 as well as the prototype the commercial LP2.
The metal strips at the top grip the glass walls and thus hold the electrode system rigid.
The oxide coated filament is formed as a pair of hairpins. The upper mica holds the tensioning springs with hooks at the base.
The wide glass tube envelope is 28 mm in diameter and, excluding the B4 base pins, is 86 mm tall.
Reference: Data-sheet.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.2
150
-4.5
10.0
4000
4.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 23, 2020.
shape:wide.glass.tube construction:pinch type:triode age:1930.1940 base:b4 heater:2.0v pins:4 pin:1.a pin:2.g1 pin:3.f pin:4.f
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