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|
Philips
A442 (straight version) |
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Advertisement for the A442 radio valve in Radio Expres,
February 3rd, 1928 |
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Tetrode
Introduced in 1927
| 1 |
2 |
3 |
4 |
tc |
base |
| g2 |
f |
f |
g1 |
a |
B4 |
|
Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
Ra |
gm |
| 4 |
0.06 |
200 |
100 |
-1 |
4 |
0.8 |
400,000 |
0.7 |
| Equivalent |
1-442, 410SG, A2004,
C150, DZ2, G406,
G442, H406D, L409, PM14, RES094, RO4142, S4066,
S410,
SX406, TA42, VH300 |
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