Vacuum Tube Data Sheets

6CA7 / EL34

Operating Characteristics Class AB, two tubes
Supply voltage 375 volts
Load resistance, plate to plate 3400 ohms
Common grid No. 2 resistor 470 ohms
Cathode resistor 130 ohms
Grid No. 3 voltage 0 volt
Input voltage 0 21 volts (rms)
Supply voltage 375 375 volts
Plate voltage + voltage across cathode resistor 355 350 volts
Plate current 2 x 75 2 x 95 ma
Grid No. 2 current 2 x 11.5 2 x 22.5 ma
Max. signal power output 0 35 watts
Total harmonic distortion ___ 5 percent

 

Operating Characteristics in Triode Connection
(Grid No. 2 connected to plate)
Class A, one tube, supply voltage 375 volts
Supply voltage 375 volts
Grid No. 3 voltage 0 volt
Cathode resistor 370 ohms
Load resistance 3000 ohms
Input voltage 18.9 volts (rms)
Plate current 70 ma
Max. signal power output 6 watts
Total harmonic distortion 8 percent
Input voltage for power output of 50 milliwatts 1.7 volts (rms)

 

Operating Characteristics in Triode Connection
(Grid No. 2 connected to plate)
Class AB, two tubes, supply voltage 400 volts
Supply voltage 400 volts
Grid No. 3 voltage 0 volt
Cathode resistor 220 ohms
Load resistance, plate to plate 5000 ohms
Input voltage 0 22 volts (rms)
Plate current 2 x 65 2 x 71 ma
Max. signal power output 0 16.5 watts
Total harmonic distortion ___ 3 percent

 

Vacuum Tube Data Sheets

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