ECL80
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BrandPhilips
ClassTriode-Pentode
Base9-pin Noval
Filament6.3V @ 300mA
Construction
Primary TypeTriode-Pentode
EnvelopeT6-1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation3.5 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.5 V
Cathode Current15 mA
H-C Voltage150 V
Audio Performance
Typical THD10%
Power Output1.4 W
Key Features
- Heater-cathode operation
- Compact T6-1/2 bulb
- Common cathode for sections
- Suitable for TV frame output or AF amplification
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Power Amplifier | 170V | 3300 | 150000 | - | 15mA |
| Pentode Power Amplifier | 200V | 3400 | 150000 | - | 17.5mA |
| Triode Characteristics | 100V | 1900 | - | 21 | 7.9mA |
| Triode Characteristics | 100V | 1350 | - | 18 | 4mA |
Application Notes
Commonly used in television receivers as sync separators or frame output tubes, as well as audio amplifiers.
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