PL500
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BrandPhilips
ClassBeam Power Tube
BaseMagnoval
Filament27V @ 300mA
Construction
Primary TypeBeam Power Pentode
EnvelopeAll-glass
SectionsSingle
Filament / Heater
Heater Notesindirect, series supply
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Grid 1 Voltage-120 V
Cathode Current250 mA
H-C Voltage220 V
Audio Performance
Key Features
- All-glass construction
- Large anode to screen-grid current ratio
- Designed for horizontal deflection output stages
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical dynamic characteristics | 75V | - | - | - | 440mA |
| Stabilized circuits (operation above the knee) - Case 1 | 62V | - | - | - | 250mA |
| Stabilized circuits (operation above the knee) - Case 2 | 66V | - | - | - | 310mA |
Application Notes
The distance between the upper side of the retaining ring or screen and the bottom of the base should not exceed 18 mm. If a metal retaining ring is used, it should be earthed and make contact with the silver ring on the bulb.
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