▼ Menu

VT50

Sensibly equivalent to:
CV1050 HL2K
    
Extras ▼

 

The VT50 is a service designation for the HL2K, designed as a detector or audio voltage amplifier triode in battery receivers.
The bright anode with ribs for rigidity.
Side view of the anode, pinch and pinch stem. The actual triode is small compared with the envelope.
The tension springs close-up. The top of the spring folds over and descends through the centre of the spring and ends in a hook. The feint lettering is all on the dome.
A closer view.
The wide glass tube envelope is 29 mm in diameter and, excluding the B4 base pins, is 72 mm tall.
References: Data-sheet, private communication, 1040, 1043, 3002 & 4001. Type VT50 was first introduced in 1934. See also 1934 adverts.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
2.0
0.1
150
-3
1.75
18k
1.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 08, 2023.
Return to Main Index