Data Sheet

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Dimension
and connections:
max 93
max 33.3
max 79
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7591 S
POWER PENTODE
Base: OCTAL
U
f =6,3 V
I
f = 0,8 A
Typical characteristic:
Class A1 amplifier
U
a = 300 V
U
g2 = 300 V
U
g1
=-10 V
I
a = 60 mA
I
g2 =8 mA
S=10 mA/V
R
i = 29 kΩ
µ =16,8
Limiting values:
Ua = 550 V
U
g2 =440 V
W
a =19 W
W
g2 = 3,3 W
I
k = 85 mA
R
g1 = max 0,3 MΩ
(fixed bias)
max 1 MΩ
(cathode bias)
U
kf = max 200 V
Capacitances:
cg1 =10 pF
c
a =5 pF
c
a/g1 = 0,25 pF