1738
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BrandPhilips
ClassRectifier
BaseGoliath
Filament1.9V @ 18000mA
Construction
Primary TypeMercury vapour and gas filled
Rectifier TypeDouble-anode
EnvelopeGlass
Sections2
Filament / Heater
Materialoxide-coated
Warm-up Time120s
Heater NotesDirectly heated by A.C.
Absolute Maximum Ratings
Plate Voltage300 V
Cathode Current15000 mA
Audio Performance
Key Features
- Mercury vapour and gas filled
- Full-wave rectification via double anode
- Oxide-coated filament
- High current battery charger application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Arc Voltage Drop | 9V | - | - | - | 7500mA |
Application Notes
Application: Battery charger (15 A per valve, max. 36 Pb-cells). The screen 's' must be connected to the cathode via a resistor of 10 kOhms, 0.5 W. After transport or long interruption, warmup time should be 5 minutes.
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