807 (vacuum tube)
| 807 | |
|---|---|
Three 807s and an early 6L6, Left, British Emitron brand 807 | |
| Classification | Beam-power tetrode |
| Service | Class-A amplifier, (single-ended) Class-AB amplifier, (push–pull) |
| Cathode | |
| Cathode type | Indirectly heated |
| Heater voltage | 6.3 |
| Heater current | 900 mA |
| Anode | |
| Max dissipation Watts | 25 W |
| Max voltage | 600 V |
| Socket connections | |
| American 5 Pin, (UY) Pin 1, Heater | |
| Typical class-A amplifier operation | |
| Anode voltage | 300 V, (600 V) |
| Anode current | 83 mA, (40-75 mA) |
| Screen voltage | 250 V, (300 V) |
| Bias voltage | -12.5 V, (-29.5 V) |
| Anode resistance | 24 kΩ |
| Typical class-C amplifier operation | |
| Power output | 24 W, (plate dissipation = 16.5 W max) |
| Anode voltage | 475 V |
| Anode current | 83 mA |
| Screen voltage | 300 V (screen dissipation = 2.5 W max) |
| Bias voltage | -50 V |
| Typical class-AB amplifier operation (Values are for two tubes) | |
| Anode voltage | 400 V (AB1), 600 V (AB2) |
| Anode current | 90-119 mA (AB1), 90-240 mA (AB2),(zero to max signal) |
| Screen voltage | 300 V (AB1), 300 V (AB2) |
| Bias voltage | -45 V (AB1), -25--30 V (AB2) |
| References | |
| Philips Valve Data Book, Philips Electrical Industries, 69-73 Clarence Street, Sydney, Radio Valve Application Division, 1958 Radio Valve Data, Eighth Ed. Iliffe Books Ltd., London, 1966 | |
The 807 is a beam tetrode vacuum tube, widely used in audio- and radio-frequency power amplifier applications.