Tube-number record
U.22
0 archive entries
U.22 is a tube type in the TubeDatabase archive (class: High Voltage Half-Wave Rectifier). Recorded specifications: brand MAZDA, year 1948, construction Rectifier, socket Octal, and maximum plate voltage 5200 V. The archive does not yet hold a photographed example of this type.
BrandMAZDA
ClassHigh Voltage Half-Wave Rectifier
BaseOctal
Filament2 V @ 2 mA
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeClear
Sections1
Filament / Heater
Heater NotesHeating time delay approximately 15% of final output voltage at 35 secs.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier Service | 5150 V | — | — | — | 0.25 mA |
Application Notes
Resistance may be obtained in the distributed resistance of the transformer winding. Viewed from underside of base.
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