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HL92

Sensibly equivalent to:
50C5 CV1959
See also:
Brimar American Miniature Valves Advert, November 1950
    
Extras ▼

 

This audio output valve appears to have been designed for American voltages, but although not marked, the type was introduced by Mullard.
With an anode load of 2,500 Ohms it would deliver in a single ended configuration 1.9 Watts at 9 % distortion. Probably used for television receivers.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 58 mm tall.
References: Datasheet & 1040. Type HL92 was first introduced in 1950.

 

Pin Connections
B7G
1
2
3
4
5
6
7
k
g1
h
h
g1
g2
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
50.0
0.15
110
110
-7.5
49
4.0
10,000
7.5
1.9
9%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 22, 2014.
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