Tube-number record
HIGH-VACUUM RECTIFIER
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HIGH-VACUUM RECTIFIER is a tube type in the TubeDatabase archive (class: Power Rectifier). Recorded specifications: brand Machlett Laboratories, Inc., year 1958, construction Rectifier, base Copper, maximum plate voltage 150000 V, and maximum plate dissipation 2000 W. The archive does not yet hold a photographed example of this type.
BrandMachlett Laboratories, Inc.
ClassPower Rectifier
Construction
Primary TypeRectifier
Rectifier TypeHigh-vacuum
EnvelopeOil-immersed glass/copper
Base MaterialCopper
SectionsSingle
Filament / Heater
MaterialThoriated-tungsten
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage150000 V
Plate Dissipation2000 W
Cathode Current10000 mA
Audio Performance
Key Features
- Oil-immersed
- Catenary type thoriated-tungsten filament
- Heavy-wall copper anode
- Hold-off diode functionality
- High power radar applications
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Tube Voltage Drop | 2400 V | — | — | — | 10000 mA |
Application Notes
When the tube is initially installed or has been inoperative for an extended period, maximum rated voltage must not be applied instantaneously. The tube should be warmed-up by operating at 60% of maximum rated voltage for 5 minutes, gradually increasing over 40 minutes total.
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