The X63 heptode mixer is typical of the 1940s frequency changer. The triode oscillator is formed between the cathode and g2 acting as an anode, and has to generate a peak to peak voltage of 25 Volts. The mixer is screened by G3 and G5 with the signal injected into the oscillating electron stream at the top cap g4.
The classic envelope is 36 mm in diameter and, excluding the IO base pins, is 98 mm tall.
Pin Connections
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
tc |
|
m |
h |
a |
g3,g5 |
g1 |
g2 |
h |
k |
g4 |
Absolute Maximum Operating Conditions
|
Vh |
Ah |
Va |
Vs |
Vg |
mAa |
mAs |
ra |
gm |
|
6.3 |
0.3 |
250 |
100 |
-3 |
5 |
2.7 |
0.3M |
0.49 |
This exhibit was last updated on 07 August 2005 |
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