Preamps
WE211 direct-heated needle-shaped tungsten cathode triode can be used for ABC power amplification.
Filament Heating
Uf-----------------10V
Intermediate frequency: 3.25A
Interelectrode capacitance
Input capacitance: 6PF
Output capacitor------------- 5.5PF
Cross-circuit capacitance: 14.5PF
Static parameters
Voltage input------------------10V
Voltage-----------------1250V
-Uh-------------------70
La-----------------100 mA
Voltage------------------3.8mA/V
U(IA75=75mA) --- 12
Remaining---------------------7K
Output power------------------10W
Recommended working status (reference value)
Single tube Class A amplifier (AF), limiting parameters under typical working conditions.
Voltage source -------------750 1000 1250 1250V
Air pressure-------------75W
-Ug-----------46 61 80V
RL-------------8.8 7.6 9.2K
IA-------------34 53 60MA
Gm------------3.1 - -mA/V
ug (peak)-------110 148V
Daily average----------4.4 3.8 3.6 K
Phew-----------5.6 12 19.7W