Tube-number record
11CF11
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BrandGeneral Electric
ClassCompactron Dissimilar-Double-Triode Pentode
BaseCompactron
Filament10.7 V @ 600 mA
Construction
Primary TypeDual triode
EnvelopeT-9
Base MaterialGlass
Sections3
Filament / Heater
Warm-up Time11s
Heater NotesSeries string heater
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation5 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Color TV Type
- Frame-Grid Video Amplifier
- High Transconductance
- Multi-function
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 200 V | 21200 | 490000 | — | 27.5 mA |
| Triode Section 1 | 200 V | 5500 | 12400 | 69 | 7.1 mA |
| Triode Section 2 | 200 V | 6300 | 9200 | 59 | 7.6 mA |
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