▼ Menu

HL2

Sensibly equivalent to:
210HF CV1673 HLB1 PM2HL
See also:
Osram HL2 Advert - Osram S21 S22 H2 HL2 LP2 P2 & PT2 Advert
    
Extras ▼

 

The HL2 is a dull emitter battery triode. It was designed as a detector in broadcast receivers, in the early 1930s.
We know from the envelope that this was made in England, and this version of the valve has an external metalising for enhanced screening. HL2 is a plain glass version.
The balloon envelope is 40 mm in diameter and, excluding the B4 base pins, is 82 mm tall.
References: Datasheet & 1040 Type HL2 was first introduced in 1931.

 

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
0.1
150
-3
1.8
18,000
1.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 22, 2014.
Return to Main Index