Tube-number record
849
0 archive entries
849 is a tube type in the TubeDatabase archive (class: Three Electrode Air Cooled Vacuum Tube Modulator, Audio Frequency Power Amplifier, Radio Frequency Amplifier, Oscillator). Recorded specifications: brand Amperex, construction Triode, maximum plate voltage 3000 V, and maximum plate dissipation 400 W. The archive does not yet hold a photographed example of this type.
BrandAmperex
ClassThree Electrode Air Cooled Vacuum Tube Modulator, Audio Frequency Power Amplifier, Radio Frequency Amplifier, Oscillator
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation400 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A A.F. Power Amplifier | 3000 V | 6000 | 3200 | 19 | 100 mA |
| Class C R.F. Power Amplifier (Telephony) | 2000 V | — | — | — | 300 mA |
| Class C R.F. Power Amplifier (Telegraphy) | 2500 V | — | — | — |
Application Notes
Used as modulator, A.F. power amplifier, R.F. amplifier, and oscillator.
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