WhitakerAudio J C Whitaker 20 W Stereo Audio Amplifier, Manual, Page: 176 / 194

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Selected tube parameters are listed in Table 10.6.
4
10.2 Notes
Table 10.6 Key Parameters of the 6CA4
General Characteristics
Heater 6.3 V, 1 A
Peak inverse plate voltage 1000 V
Peak plate current (per plate) 500 mA
Peak heater-cathode voltage 500 V
Maximum capacitance for capacitor input to filter 50
μ
F
Minimum inductance for choke input to filter 1 H
Typical Operation with Capacitor Input to Filter
AC plate-to-plate supply voltage 700 V rms
Filter-input capacitor 50
μ
F
Total effective plate supply impedance per plate 240
Ω
Average output current 150 mA
DC output voltage at input to filter (approx.) at 150 mA load current 347 V
Typical Operation with Choke Input to Filter
AC plate-to-plate supply voltage 750 V rms
Filter-input choke 10 H
Average output current 180 mA
DC output voltage 330 V
4. Data relating to operation with a choke-input filter from JJ Electronic data sheet, Cadca, Slovak Republic.