Tube-number record
11A.2
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BrandBrimar
ClassDouble Diode Triode
Base7-pin (non-miniature)
Filament4 V @ 1000 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections3
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage200 V
Audio Performance
Key Features
- Indirectly heated
- Automatic volume control
- Detection
- Amplification
- Electrostatic screen between diodes and triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100 V | 2800 | 18000 | 50 | — |
Application Notes
Designed for performing simultaneously the functions of automatic volume control, detection and amplification. Full-wave or half-wave rectification together with delayed A.V.C. or delayed and amplified A.V.C. may be employed.
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