14X7
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BrandNational Union
ClassTwin Diode - High Mu Triode
BaseLoktal 8-Pin
Filament12.6V @ 150mA
Construction
Primary TypeTwin Diode - High Mu Triode
EnvelopeT-9
SectionsTriple
Filament / Heater
Heater NotesCoated Unipotential Cathode
Absolute Maximum Ratings
Plate Voltage300 V
Audio Performance
Key Features
- Coated Unipotential Cathodes
- High Mu Triode
- Loktal Base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics (Condition 1) | 100V | 1050 | 62000 | 65 | 0.8mA |
| Average Characteristics (Condition 2) | 250V | 1600 | 62500 | 100 | 1.1mA |
Application Notes
Resistance coupled amplifier Class A. Voltage gain of 38-54 depending on plate supply and load.
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