Tube-number record
DCG 7/100
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BrandPhilips
ClassGrid-controlled Mercury Vapour Rectifier
BaseSpecial / none
Filament5 V @ 20000 mA
Construction
Primary TypeRectifier
Rectifier TypeMercury Vapour
EnvelopeGlass
Base MaterialMetal/Ceramic
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated, cathode connected to filament; Preheating time min. 10 minutes.
Absolute Maximum Ratings
Plate Voltage15000 V
Grid 1 Voltage600 V
Cathode Current10000 mA
Audio Performance
Key Features
- Oxide-coated cathode
- Mercury vapour filling
- Grid control for regulated output
- High voltage capability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier arc drop | 12 V | — | — | — | 15000 mA |
Application Notes
After transport or long interruption, 45 minutes preheating is required for proper mercury distribution. Preheating of anode at max 500V required if switching after 10 mins heater on.
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