Vacuum Tube Rectifier Vacuum Tube 211-TII Collection Version for HiFi Audio Valve Electronic Tube Amplifier DIY Matched(4pcs Matched Quad)

vacuum tube
211-TII 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(Ia=75mA)---------------------------12
RL--------------------------------------7 K
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 K
RL--------8.8 7.6 9.2 K
Pout-------5.6 12 19.7 W
Push-pull. class B(A-F)
typical working condition limited parameter
Ua------------------ 1000 1250 1250 V
Ia (mAx.sig per tube)-------------------175 mA
Pa (in) (mAx.sig per tube)--------------- 220 W
Pa (per tube)------------------------- 100 W
-Ug------------------72 95 V
Ug(pk)-----------------380 410 V
Ia (0)------------------20 20 mA
Ia(mAx.sig)-----------320 320 mA
Pd(mAx.sig)------------7.5 8 W
RL(a-a)---------------6.9 9 K
Pout------------------200 260W
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Channels : 1
Model Number : 211-TII
Maximum Power Per Channel : NO POWER
Origin : Mainland China