Tube-number record
872
0 archive entries
872 is a tube type in the TubeDatabase archive (class: Half-Wave Mercury-Vapor Rectifier). Recorded specifications: construction Mercury Vapor, base Plastic, socket 4-pin, and maximum plate voltage 10000 V. The archive does not yet hold a photographed example of this type.
ClassHalf-Wave Mercury-Vapor Rectifier
Base4-pin
Construction
Primary TypeMercury Vapor
Rectifier TypeHalf-wave
EnvelopeGlass
Base MaterialPlastic
Sections1
Filament / Heater
MaterialCoated
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage10000 V
Cathode Current1250 mA
Audio Performance
Key Features
- High-voltage high-current rectifier
- Mercury-vapor type
- Filamentary cathode
Application Notes
The filament should be allowed to reach operating temperature before the plate voltage is applied. For an ambient temperature of 25°C, a minimum of 30 seconds is recommended.
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