1L34
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BrandTesla
ClassPower Pentode
BaseB7G
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide
Absolute Maximum Ratings
Plate Voltage90 V
Plate Dissipation0.7 W
Grid 2 Voltage67.5 V
Cathode Current12 mA
Audio Performance
Typical THD12%
Power Output0.23 W
Key Features
- Directly heated
- Battery operation
- Suitable for RF power amplifier Class C
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Audio | 45V | 1250 | 100000 | 140 | 3.8mA |
| Class A Audio | 90V | 1400 | 100000 | 140 | 7.4mA |
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