32A8
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ClassHigh-Mu Triode, Power Pentode
BaseNoval 9-Pin
Filament32V @ 150mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesDesigned for transformer-less radio receivers
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation7 W
Grid 2 Voltage250 V
Cathode Current50 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output1.05 W
Key Features
- Transformer-less radio receivers
- AF amplifier
- Output tube
- Noval 9-Pin base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit | 100V | 2900 | - | 70 | 3.5mA |
| Pentode Unit | 100V | 6800 | 15000 | - | 26mA |
Application Notes
The D.C. component of heater-cathode voltage must not exceed 100 volts when heater is positive with respect to cathode.
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