R 120
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BrandLa Radiotechnique
ClassPower Triode
BaseOctal
Filament6.3V @ 1.45mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect heating
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation15 W
Cathode Current90 mA
H-C Voltage50 V
Audio Performance
Typical THD10%
Power Output3.5 W
Key Features
- Indirect heating
- Power amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single Class A | 250V | 6400 | 840 | 5.4 | 60mA |
| Symmetric Class A | 250V | - | - | - | 120mA |
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