Tube-number record
PL 508
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BrandMazda Belvu
ClassPower Pentode
BaseMagnoval
Filament18.5 V @ 300 mA
Construction
Primary TypePentode
EnvelopeT9
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesSeries supply
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation12 W
Grid 2 Voltage275 V
Cathode Current100 mA
H-C Voltage220 V
Audio Performance
Key Features
- Indirect heating
- TV Sweep amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Nominal (Pulsed) | 190 V | — | — | — | 60 mA |
| End of Scan (Peak) | 70 V | — | — | — | 230 mA |
Application Notes
Specifically designed for TV color vertical or horizontal scanning circuits.
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