|
Cossor MP/Pen B5 with
side connection |
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 |
 |
|
MPPen B5 |
MPPen B7 |
| |
| Output pentode |
| |
|
Introduced in 1931 |
| |
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|
|
|
1 |
2 |
3 |
4 |
5 |
sc |
base |
|
a |
g1 |
f |
f |
k,g3 |
g2 |
B5+sc (1931) |
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| |
| |
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
base |
|
- |
g1 |
g2 |
f |
f |
k,g3 |
a |
B7 (1933) |
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|
|
| |
| |
Vf |
Af |
Va |
Vs |
Vg |
mAa |
mAs |
ra |
gm |
Pout |
| MPPen B5
|
4 |
1 |
250 |
200 |
-12 |
30 |
9 |
|
4 |
2 |
| MPPen B7
|
4 |
1 |
250 |
250 |
-16 |
30 |
6 |
200,000 |
3.5 |
3.5 |
|
| |
| Equivalent |
7A2, AC/Pen,
APP4120, CV1683,
KT42,
MKT4/5,
MPT4,
L4150,
P440N, Pen4V,
TE534, VT115 |
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