1859
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BrandPHILIPS
ClassRectifier
Construction
Primary TypeMercury vapor and gas filled
Rectifier TypeDouble-anode
EnvelopeGlass
Sections2
Filament / Heater
MaterialOxide-coated
Warm-up Time120s
Absolute Maximum Ratings
Plate Voltage360 V
Cathode Current25000 mA
Audio Performance
Key Features
- Cinema rectifiers
- Gas filled
- Mercury vapour
- Double-anode
- Oxide-coated filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit a | 85V | - | - | - | 50000mA |
| Circuit e | 120V | - | - | - | 100000mA |
| Circuit f | 120V | - | - | - | 150000mA |
Application Notes
In order to obtain the mentioned ignition voltage of 28 V, an auxiliary D.C. supply unit delivering min. 40 V, 10 mA power, should be connected via a current-limiting resistor to the auxiliary ignition electrode an (+) and to the cathode (-). The Philips Auxiliary Ignition Unit type 1289 is recommended.
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