CCH 2
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BrandPhilips Miniwatt
ClassTriode-Heptode Frequency Converter
BaseP8A Side-contact
Filament29V @ 0.2mA
Construction
Primary TypeTriode-Heptode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesSeries filament supply; D.C. or A.C.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1 W
Grid 2 Voltage125 V
Grid 1 Voltage-1.3 V
Cathode Current25 mA
H-C Voltage100 V
Audio Performance
Key Features
- Indirectly heated
- Multi-unit tube
- Controlled transconductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Heptode section as frequency converter | 200V | 750 | 1500000 | - | 3.25mA |
| Triode section as oscillator | 100V | 5500 | - | 17.5 | 9.5mA |
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