GV 211 plus 
GV 211+ is direct-heated type thorium tungsten cathode triode, can be used as class A, B and C.
Heater
Uf————————————–10 V
If—————————————3.25 A
Direct Interelectrode Capacitances
input———————————-6 PF
output———————————-5.5 PF
grid to plate———————————-14.5 PF
Static parameter
Ua————————————–1250 V
—Ug————————————70 V
Ia————————————–100 mA
Gm————————————-3.8 mA/V
u(当Ia=75mA时)—————————12
RL————————————–7 KΩ
Pout————————————10 W
Recommended Operating Conditions ( reference value)
class A(A-F) for two tubes：
typical working condition limited parameter
Ua——–750 1000 1250 1250 V
Pa—————————-75 W
—Ug——-46 61 80 V
Ug(pk)—–41 56 75 V
Ia(0)——-34 53 60 mA
ri———4.4 3.8 3.6 KΩ
RL——–8.8 7.6 9.2 KΩ
Pout——-5.6 12 19.7 W
