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6C8G

Sensibly equivalent to:
CV1896 VT-163
    
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The intended application of the 6C8G is as an audio amplifier followed by a phase splitter in sets or 'gram amplifiers using push-pull output. The audio input would normally be taken to the top cap, being the grid of the 'first' triode.
This version from National Union has a clear envelope and the twin anodes are clearly seen, as is the grid connection to the top cap.
Each valve has a separate cathode and the first valve has its control grid taken to the top cap. This will confer greater isolation from the anode circuit than for valve two.
The classic envelope is 37 mm in diameter and, excluding the IO base pins, is 98 mm tall.
References: Datasheet & 3002. Type 6C8G was first introduced in 1937.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a(1)
k(1)
g1(2)
a(2)
h
k(2)
g1(1)

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
250
0
3.2
22,500
1.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 16, 2013.
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