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CV784

Sensibly equivalent to:
1FD9 1S5 DAF91 ZD17
    
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The CV784 is a diode pentode valve that was designed for battery portable radio receivers and is identical to the commercial 1FD9.
References: Datasheet & 1040. Type CV784 was first introduced in 1947.

 

Pin Connections
B7G
1
2
3
4
5
6
7
f-
nc
a(d)
g2
a
g1
f+

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.4
0.05
67.5
67.5
0
1.6
0.4
0.6M
0.63
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 07, 2015.
shape:thin.glass.tube construction:all.glass type:diode.pentode age:1940.1950 base:b7g heater:1.4v pins:7 pin:1.f- pin:2.nc pin:3.a(d) pin:4.g2 pin:5.a pin:6.g1 pin:7.f+
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