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DVS-Pen

 
See also:
Cossor MSPenA, MSPen, MVSPen, DSPen & DVSPen Advert
    
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The Cossor DVS-Pen is a vari_μ RF pentode from 1933 designed for receivers in areas where DC mains was the only choice and thus series heater chains were required. For AC mains sets the MVS-Pen was the alternative.
The DVS-Pen is unusual in having the screen grid taken to the top cap.
The reverse is plain.
The balloon envelope is 44 mm in diameter and, excluding the B5 base pins, is 127 mm tall.
References: Datasheet, & 1043. Type DVS-Pen was first introduced in 1933.

 

Pin Connections
B5
1
2
3
4
5
tc
a
g1
h
h
k,g3
g2

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
16.0
0.25
200
100
-1.5
3.0
1.7
2.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 08, 2019.
shape:balloon construction:pinch type:pentode age:1930.1940 base:b5 pins:5 pin:1.a pin:2.g1 pin:3.h pin:4.h pin:5.k.g3 pin:tc.g2
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