Acoustic Guitar Amplifiers & Preamps / Preamps
WE211 is a directly heated thoriated tungsten cathode triode, which can be used for class A, B and C power amplification.
Filament Heating
Uf----------------------------------------10V
If-------------------------3.25 A
Interelectrode capacitance
Input capacitance---------------------------------6PF
Output Capacitor---------------------------------5.5 PF
Inter-circuit capacitance ----------------------------------14.5 PF
Static parameters
Ua----------------------------------------1250V
-Ug----------------------------------------70V
Ia-------------------------------------------------100 mA
Gm--------------------------------------3.8 mA/V
u(Ia=75mA)--------------------------12
RL----------------------------------------7 K
Pout------------------------------------10 W
Recommended working status (reference value)
Single tube Class A amplification (AF).
Typical working conditions limit parameters
Ua--------750 1000 1250 1250 V
Pa-----------------------------75 W
-Ug-------46 61 80V
Peak voltage——41 56 75 V
Ia(0)-------34 53 60 mA
Li---------4.4 3.8 3.6 K
RL--------8.8 7.6 9.2 K
Pouting------5.6 12 19.7 W
Push-pull Class B power amplifier (AF).
Typical working conditions limit parameters
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 (aa) -------------6.9 9 K
Tsk------------------200 260 W