Vacuum Tube Data Sheets

6CA7 / EL34

Operating Characteristics Class B, two tubes
Supply Voltage 375 volts
Common grid No. 2 resistor (without decoupling) 470 ohms
Grid No. 1 bias -32 volts
Grid No. 3 voltage 0 volt
Input voltage 0 22.7 22.7 volts (rms)
Load resistance, plate to plate ___ 2800 3800 volts
Supply voltage 375 375 350 volts
Plate voltage 370 350 325 volts
Plate current 2 x 35 2 x 120 2 x 93 ma
Grid No. 2 current 2 x 4.7 2 x 25 2 x 25 ma
Max. signal power output 0 44 36 watts
Total harmonic distortion ___ 5 6 percent

 

Operating Characteristics Class B, two tubes
Supply voltage 500 / 400 volts
Common grid No. 2 resistor (without decoupling) 750 ohms
Grid No. 1 bias -36 volts
Grid No. 3 voltage 0 volt
Input voltage 0 25.8 25.8 volts (rms)
Load resistance, plate to plate ___ 4000 5000 ohms
Plate supply voltage 500 500 475 volts
Plate voltage 495 475 450 volts
Grid No. 2 supply voltage 400 400 375 volts
Plate current 2 x 30 2 x 125 2 x 102 ma
Grid No. 2 current 2 x 4 2 x 25 2 x 25 ma
Max. signal power output 0 70 58 watts
Total harmonic distortion ___ 5 6 percent

 

Operating Characteristics Class B, two tubes
Supply voltage 800 / 400 volts
Common grid No. 2 resistor (without decoupling) 750 ohms
Grid No. 1 bias -39 volts
Grid No. 3 voltage 0 volt
Input voltage 0 23.4 23.4 volts (rms)
Load resistance, plate to plate ___ 11,000 11,000 ohms
Plate supply voltage 800 800 750 volts
Plate voltage 795 775 725 volts
Grid No. 2 supply voltage 400 400 375 volts
Plate current 2 x 25 2 x 91 2 x 84 ma
Grid No. 2 current 2 x 3 2 x 19 2 x 19 ma
Max. signal power output 0 100 90 watts
Total harmonic distortion ___ 5 6 percent

 

Vacuum Tube Data Sheets

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