DCH 22
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BrandPhilips
ClassTriode-Hexode frequency converter
Base8-contact side-contact
Construction
Primary TypeTriode-Hexode
EnvelopeGlass
Sections2
Filament / Heater
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation0.3 W
Grid 2 Voltage115 V
Grid 1 Voltage-0.2 V
Cathode Current6 mA
Audio Performance
Key Features
- Direct heating
- Battery operation
- Frequency converter for superheterodyne receivers
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Hexode Mixer (Fixed Screen Grid) | 90V | 250 | 1000000 | - | 0.75mA |
| Hexode Mixer (Fixed Screen Grid) | 120V | 260 | 1300000 | - | 1mA |
| Triode Section | 60V | 1300 | - | - | 1.3mA |
Application Notes
Heater current must be adjusted to 100 mA when filaments are connected in series.
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