6ET7
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BrandSYLVANIA
ClassDuo-diode sharp-cutoff pentode
BaseSmall Button 9-Pin
Filament6.3V @ 750mA
Construction
Primary TypeDuo-diode pentode
EnvelopeT-6 1/2
SectionsPentode and Two Diode Sections
Filament / Heater
Heater Notes11 seconds warm-up time
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation5 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Separate cathodes
- Sharp-cutoff pentode
- Internal shield
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Class A1 Amplifier | 200V | 11500 | 60000 | - | 25mA |
Application Notes
The pentode unit is intended for use as a video amplifier, while the diodes are essentially intended for use as a horizontal phase detector in television receivers.
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