TWIN TRIODE
0 Tubes in archive
BrandGeneral Electric
ClassSeries-regulator tube
BaseOctal
Filament6.3V @ 2.5mA
Construction
Primary TypeTwin Triode
EnvelopeT-12
Base MaterialMicanol
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation13 W
Cathode Current125 mA
H-C Voltage300 V
Audio Performance
Key Features
- Low-mu twin triode
- Controlled zero-bias plate current
- Low-loss phenolic base
- Short Medium-Shell Octal 8-Pin Micanol base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Each Section | 135V | 7000 | 280 | 2 | 125mA |
| Zero-Bias | 40V | - | - | - | 150mA |
Application Notes
Primarily designed for service as a series-regulator tube in d-c power supplies and booster scanning services. Operation with fixed bias is not recommended.
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