The NR73 was a very popular and useful double triode badged as a Navy Receiving valve. Type NR73 and its commercial equivalent the 6N7, is by no means a general-purpose double triode since it has a powerful heaters, a common cathode, and is designed to operate in push-pull Class B2 with zero grid bias. The anode to anode load is given as 8,000 Ohm.
It is specifically an audio power valve capable of 10W per pair.
The classic envelope is 42 mm in diameter and, excluding the IO base pins, is 82 mm tall.
Pin Connections
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
m |
h |
a(2) |
g1(2) |
g1(1) |
a(1) |
h |
k |
Absolute Maximum Operating Conditions
|
Vh |
Ah |
Va |
Vg |
mAa |
|
6.3 |
0.8 |
300 |
0 |
35.0 |
This exhibit was last updated on 07 July 2006 |
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