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6R7

Sensibly equivalent to:
CV1963
    
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The 6R7 double diode triode was designed for radio receiver use. In the classic superhet broadcast receiver such a valve would provide signal and AGC rectification, followed by the first audio amplification.
The control grid of the triode was taken to the top cap. The cap is fitted to an insulating disc that is clamped to the envelope by rolling over the top of the metal tube.
The thin metal tube envelope is 25 mm in diameter, and excluding the IO base pins, is 63 mm tall.
References: Datasheet, 1040 & 1043. Type 6R7 was first introduced in 1936.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
a(d2)
a(d1)
-
h
k
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
250
-9
9.5
8,500
1.9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 26, 2013.
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