WhitakerAudio 60 W Stereo Power Amplifier, Руководство пользователя и по сборке

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Selected tube parameters are listed in Table 10.2.
Table 10.2 Key Parameters of the 7027A
General Characteristics
Heater (ac/dc) 6.3 V, 0.9 A
Heater-cathode voltage
Peak value ±200 V max.
Average value 100 V max.
Direct interelectrode capacitance
Grid to plate 1.5 pF max.
Grid #1 to cathode, heater, grid #2, grid #3 10 pF
Plate to cathode, heater, grid #2, grid #3 7.5 pF
Class AB
1
Amplifier, Maximum Ratings (Design-Maximum Values)
Plate voltage 600 V
Grid #2 (screen grid) voltage 500 V
Plate dissipation 35 W
Grid #2 (screen grid) input 5 W
Push-Pull Class AB
1
Amplifier with Grid #2 of Each Tube Connected to Output Transformer Tap
Design Maximum Values
Plate voltage 600 V
Plate dissipation 35 W
Grid #2 input 4.5 W
Typical Operation with Fixed Bias (values are for two tubes)
Plate supply voltage 410 V
Grid #2 (screen grid) supply voltage Note 1
Figure 10.4 Characteristic curves of the 7027A.