9GB8
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BrandSiemens Edison Swan
ClassTriode-Beam Tetrode
BaseNoval (B9A)
Filament9.4V @ 0.3mA
Construction
Primary TypeTriode-Beam Tetrode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIntended for use in series connected heater chains.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation3 W
Grid 2 Voltage250 V
H-C Voltage150 V
Audio Performance
Key Features
- High slope beam tetrode
- Medium mu triode
- Series heater connection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 200V | 1400 | - | 18 | 10mA |
| Tetrode Section | 170V | 7500 | - | - | 10mA |
Application Notes
Intended for Video Output or Sync Separator stages of AC/DC Mains Television receivers.
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