7586
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BrandRCA
ClassTriode
BaseSubminiature
Filament6.3V @ 135mA
Construction
Primary TypeOther / special
EnvelopeMetal Shell MT4
Base MaterialCeramic
SectionsSingle
Filament / Heater
Heater NotesRCA Dark Heater
Absolute Maximum Ratings
Plate Voltage110 V
Plate Dissipation1 W
Grid 1 Voltage-55 V
Cathode Current15 mA
H-C Voltage100 V
Audio Performance
Key Features
- Medium-mu
- All-Ceramic-and-Metal Construction
- High gain with low noise
- Cantilever-supported cylindrical electrode structure
- Dark Heater
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Condition 1) | 26.5V | 7000 | 4400 | 31 | 2.8mA |
| Class A Amplifier (Condition 2) | 40V | 11500 | 3000 | 35 | 7.5mA |
| Class A Amplifier (Condition 3) | 75V | 11500 | 3000 | 34 | 10.5mA |
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