Tube-number record
VTP-7169
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BrandVacuum Tube Products Co. Inc.
ClassIonization Gauge Tube
Base7-pin (non-miniature)
Construction
Primary TypeOther / special
EnvelopeNonex 7720
Base MaterialMoulded Flare
SectionsTriple Filament
Filament / Heater
Absolute Maximum Ratings
Plate Voltage500 V
Grid 2 Voltage500 V
Grid 1 Voltage5 V
Cathode Current15 mA
Audio Performance
Key Features
- Three separately connected filaments
- All glass envelope
- Dual grid connections for easy outgassing
- High reliability for large systems
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Measurement | -30 V | — | — | — | 0.06 mA |
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