Tube-number record
849-A
0 archive entries
BrandAmperex
ClassTransmitting Tube
Base3-pin / Peewee
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation500 W
Grid 1 Voltage-500 V
Cathode Current500 mA
Audio Performance
Typical THD4%
Power Output150 W
Key Features
- Radiation cooled
- Thoriated tungsten filament
- Supersedes older 849 model
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| A.F. Power Amplifier Class A | 2500 V | 7600 | — | 19 | 135 mA |
| A.F. Power Amplifier Class A | 3000 V | 7600 | — | 19 | 120 mA |
| A.F. Power Amplifier Class A | 4000 V | 7600 | — | 19 |
Application Notes
The Amperex 849-A is designed for A.F. Power Amplifier, Modulator, R.F. Power Amplifier or Oscillator service.
0 results