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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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