Preamps
Interelectrode capacitance
No. 1 No. 2
Door screen: 2.6 2.6
Input capacitance: 3.2 3.2 pF
Output capacitance: 0.5 0.4 pF
1-2 screen: 0.8 PF
Maximum Ratings
Screen voltage: 300V
Screen power dissipation: 3.5W
Gate voltage: 0, -50V
Cathode current: 20mA
Voltage between hot wire and cathode: 200V
Gate resistance: 0.25,1M
Typical operating characteristics
Class A1 Amplification (per three-pole section)
Screen voltage: 250V
Gate voltage: -10.5V
Screen current: 11.5mA
Internal resistance of board: 5300
Mutual conductivity: 3100µA/V
Magnification: 16.5
Screen current: (Vg=-14V) 4mA
Gate voltage: (Ia=50μA) -23V