Tube-number record
GI-5B
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BrandUSSR
ClassModulator Triode
Filament6.3 V @ 2400 mA
Construction
Primary TypeTriode
Envelopemetal-ceramic
Base Materialmetal
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage2200 V
Plate Dissipation300 W
Grid 1 Voltage-410 V
Cathode Current250 mA
Audio Performance
Key Features
- Metal-ceramic envelope
- Forced air cooling
- Oxide-coated cathode
- Series anode modulation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Modulator | 600 V | 20000 | — | — | 500 mA |
| Zero Grid Bias | 300 V | — | — | — | 470 mA |
Application Notes
Used in series anode modulation circuits and electronic voltage regulators in RF equipment.
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