4654
10 Tubes in archive
BrandPhilips
ClassOutput Pentode
BaseP-type / Octal (4654K)
Filament6.3V @ 1.35mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated, parallel supply
Absolute Maximum Ratings
Plate Voltage600 V
Plate Dissipation18 W
Grid 2 Voltage425 V
Grid 1 Voltage-1.3 V
Cathode Current120 mA
H-C Voltage50 V
Audio Performance
Typical THD11.4%
Power Output9.2 W
Key Features
- Indirectly heated
- Power Pentode
- Triode connection possible
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250V | 8500 | 22000 | 11 | 72mA |
| Class B Push-Pull | 425V | - | - | - | 40mA |
| Class AB Triode Connected | 400V | - | - | - | 100mA |
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