| ampage tube data |
ampage tube data |
|---|
| 6BQ5 POWER PENTODE | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|  |
Miniature type used
in the output stage of audio-frequency amplifiers. Requires miniature 9-contact socket. | ||||||||||||||||||||
| Heater Voltage (AC/DC) | 6.3 | volts |
| Heater Current | 0.76 | ampere |
| Heater Warm-up Time (Average) | 11 | seconds |
| Peak Heater-Cathode Voltage | ||
|---|---|---|
| Heater negative with respect to cathode | 100 max | volts |
| Heater positive with respect to cathode | 100 max | |
| Direct Interelectrode Capacitance | ||
|---|---|---|
| Grid No.1 to Plate | 0.5 max | pf |
| Grid No.1 to Cathode, Heater, Grid No.2, and Grid No.3 | 10.8 | |
| Plate to Cathode, Heater, Grid Ho.2, and Grid No.3 | 6.5 | |
| Grid No.1 to Heater | 0.25 max | |
| CLASS A1 AMPLIFIER |
| Maximum Ratings (Design-Center Values) | ||
|---|---|---|
| Plate Voltage | 300 | volts |
| Grid-No.2 (Screen-Grid) Voltage | 300 | |
| Grid-No.1 (Control-Grid) Voltage, Positive-bias value | 0 | |
| Cathode Current | 65 | ma |
| Plate Dissipation | 12 | watts |
| Grid-No.2 Input | 2 | |
| Typical Operation | ||
|---|---|---|
| Plate Voltage | 250 | volts |
| Grid-No.2 Voltage | 250 | |
| Grid-No.1 (Control-Grid) Voltage | -7.3 | |
| Peak AF Grid-No.1 Voltage | 6.2 | |
| Zero-Signal Plate Current | 48 | ma |
| Maximum-Signal Plate Current | 50.6 | |
| Zero-Signal Grid-No.2 Current | 5.5 | |
| Maximum-Signal Grid-No.2 Current | 10 | |
| Plate Resistance (Approx.) | 38000 | ohms |
| Transconductance | 11300 | umhos |
| Load Resistance | 4500 | ohms |
| Total Harmonic Distortion | 10 | % |
| Maximum-Signal Power Output | 5.7 | watts |
| PUSH-PULL CLASS AB1 AMPLIFIER |
| Maximum Ratings (Design-Center Values) | ||
|---|---|---|
| Plate Voltage | 300 | volts |
| Grid-No.2 (Screen-Grid) Voltage | 300 | |
| Grid-No.1 (Control-Grid) Voltage, Positive-bias value | 0 | |
| Cathode Current | 65 | ma |
| Plate Dissipation | 12 | watts |
| Grid-No.2 Input | 2 | |
| Typical Operation (Values are for two tubes) | |||
| Plate Supply Voltage | 250 | 300 | volts |
| Grid-No.2 Supply Voltage | 250 | 300 | |
| Cathode-Bias resistor | 130 | 130 | ohms |
| Peak AF Grid-No.1-to-Grid No.1 Voltage | 22.6 | 28.3 | volts |
| Zero-Signal Plate Current | 62 | 72 | ma |
| Maximum-Signal Plate Current | 75 | 92 | |
| Zero-Signal Grid-No.2 Current | 7 | 8 | |
| Maximum-Signal Grid-No.2 Current | 15 | 22 | |
| Effective Load Resistance (Plate-to-plate) | 8000 | 8000 | ohms |
| Total Harmonic Distortion | 3 | 4 | % |
| Maximum-Signal Power Output | 11 | 17 | watts |
| Maximum Circuit Values | ||
|---|---|---|
| Grid No. 1 Circuit Resistance | ||
| For fixed-bias operation | 0.3 | megohm |
| For cathode-bias operation | 1 | |