PL 84
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BrandPHILIPS
ClassOutput Pentode
BaseNOVAL
Filament15V @ 300mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect, AC or DC series supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation12 W
Grid 2 Voltage200 V
Cathode Current100 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output5.6 W
Key Features
- Indirectly heated
- Series supply
- A.F. output pentode
- Frame output pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 170V | 11000 | 26000 | 8 | 70mA |
| Class A (Triode connection) | 170V | - | - | - | 50mA |
Application Notes
The circuit should be designed so that peak anode current (Iap) does not exceed 145mA at Va=60V, Vg2=170V. For curves please refer to type UL 84.
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