GXU2
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BrandMarconi
ClassRectifier
BaseB4F 4-pin bayonet
Construction
Primary TypeXenon filled
Rectifier Typehalf-wave
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialXenon-filled type
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage10000 V
Cathode Current1250 mA
Audio Performance
Key Features
- Xenon filled
- Half-wave rectifier
- High Peak Inverse Voltage
- 4-pin bayonet base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single-phase full-wave (2 valves) | 3500V | - | - | - | 2500mA |
| Single-phase bridge (4 valves) | 7100V | - | - | - | 2500mA |
| Three-phase half-wave (3 valves) | 4100V | - | - | - | 3750mA |
| Three-phase full-wave (6 valves) | 4100V | - | - | - | 3750mA |
Application Notes
When quadrature operation is used, the filament voltage (pin 4 with respect to pin 2) should be crossing zero from positive towards negative when the anode voltage is at the peak of the positive half cycle. When quadrature operation is not practicable filament pin 4 should be positive when the anode is positive.
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