| ampage tube data |
ampage tube data |
|---|
| 6CA7 / EL34 POWER PENTODE | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|  |
Glass octal types
used in the output stage of audio- frequency amplifiers. Tube requires octal socket. | ||||||||||||||||||
| Heater Voltage (AC/DC) | 6.3 | volts |
| Heater Current | 1.5 | ampere |
| Peak Heater-Cathode Voltage | ||
|---|---|---|
| Heater negative with respect to cathode | 200 max | volts |
| Heater positive with respect to cathode | 200 max | |
| Direct Interelectrode Capacitance | ||
|---|---|---|
| Grid No.1 to Plate | 1 | pf |
| Grid No.1 to Cathode, Heater, Grid No.2, and Grid No.3 | 15.5 | |
| Plate to Cathode, Heater, Grid Ho.2, and Grid No.3 | 7.2 | |
| CLASS A1 AMPLIFIER |
| Maximum Ratings (Design-Center Values) | ||
|---|---|---|
| Plate Voltage | 800 | volts |
| Grid-No.2 (Screen-Grid) Voltage | 425 | |
| Grid-No.2 Input | 8 | |
| Cathode Current | 150 | ma |
| Plate Dissipation | 25 | watts |
| Typical Operation | ||
|---|---|---|
| Plate Voltage | 265 | volts |
| Grid-No.2 Voltage | 250 | |
| Grid-No.1 (Control-Grid) Voltage | -13.5 | |
| Peak AF Grid-No.1 Voltage | 12.3 | |
| Zero-Signal Plate Current | 100 | ma |
| Zero-Signal Grid No.2 Current | 15 | |
| Transconductance | 11000 | umhos |
| Plate Resistance (Approx.) | 15000 | ohms |
| Load Resistance | 2000 | |
| Maximum-Signal Power Output | 11 | watts |
| Total Harmonic Distortion | 10 | % |
| PUSH-PULL CLASS AB1 AMPLIFIER |
| Maximum Ratings (Design-Center Values) | ||
|---|---|---|
| Plate Voltage | 800 | volts |
| Grid-No.2 (Screen-Grid) Voltage | 425 | |
| Grid-No.2 Input | 8 | |
| Cathode Current | 150 | ma |
| Plate Dissipation | 25 | watts |
| Typical Operation (Values are for two tubes) | |||
| Plate Supply Voltage | 450 | volts | |
| Grid-No.2 Supply Voltage | 450 | ||
| Cathode-Bias resistor | 232 | ohms | |
| Grid No.2 resistor | 1000 | ||
| Peak AF Grid-No.1-to-Grid No.1 Voltage | 38.2 | volts | |
| Zero-Signal Plate Current | 120 | ma | |
| Maximum-Signal Plate Current | 143 | ||
| Zero-Signal Grid-No.2 Current | 20 | ||
| Maximum-Signal Grid-No.2 Current | 44 | ||
| Effective Load Resistance (Plate-to-plate) | 6500 | ohms | |
| Total Harmonic Distortion | 5.1 | % | |
| Maximum-Signal Power Output | 40 | watts | |
| Maximum Circuit Value | ||
|---|---|---|
| Grid No.1 Circuit Resistance, for cathode-bias operation | 0.7 | megohm |