17LD8
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BrandSylvania
ClassTriode-Pentode
Base9 Pin (E9-75)
Filament16.6V @ 450mA
Construction
Primary TypeTriode-Pentode
EnvelopeT-9
Sections2
Filament / Heater
Heater NotesSeries operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation7 W
Grid 2 Voltage200 V
Grid 1 Voltage-150 V
Cathode Current70 mA
H-C Voltage200 V
Audio Performance
Key Features
- Series heater operation
- Triode-Pentode structure
- Vertical deflection service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 150V | 1900 | 11300 | 21.5 | 8.5mA |
| Pentode Section | 120V | 7100 | 11700 | - | 46mA |
Application Notes
Intended for vertical deflection oscillator and amplifier applications in television receivers.
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