▼ Menu

LP2

Sensibly equivalent to:
220PA 230C AR6 CV548 CV1162 CV1166 CV1304 NR42 P12-250 VR22
See also:
CV1166 short entry
    
Extras ▼

 

The LP2 battery triode was a popular design and very similar valves were produced by several companies. As an audio output valve it produced 0.18 Watts. The 2.0 V filament was designed to be supplied from a single lead-acid accumulator.
Our other LP2 exhibits have the earlier balloon envelope. One with a slanted electrode assembly and one LP2 with vertical electrodes.
The Marconi paper brand label.
The upper mica holds the filament tension springs. Both inverted V filaments are still intact.
The classic envelope is 41 mm in diameter and, excluding the B4 base pins, is 83 mm tall.
References: Datasheet, 1040 & 1043. Type LP2 was first introduced in 1930.

 

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 May 13, 2016.
Return to Main Index