Tube-number record
HABC80
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ClassDreifachdiode - Triode
BaseNoval (B9A)
Filament19 V @ 150 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections4
Filament / Heater
Heater NotesSerienspeisung, Oxydkatode, indirekt geheizt
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Cathode Current5 mA
H-C Voltage150 V
Audio Performance
Key Features
- Triple Diode
- AF Triode
- Indirectly heated
- Noval base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode section | 250 V | 1200 | 58000 | 70 | 1 mA |
Application Notes
Combination tube used primarily in AM/FM radio receivers for detection and AF pre-amplification.
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