Tube-number record
U43
0 archive entries
U43 is a tube type in the TubeDatabase archive (class: Half Wave Rectifier). Recorded specifications: brand Marconi, year 1954, construction Other / special, socket Flexible / flying leads, and maximum plate voltage 17000 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassHalf Wave Rectifier
BaseFlexible / flying leads
Filament6.3 V @ 90 mA
Construction
Primary TypeOther / special
Rectifier TypeVacuum
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 50 c/s Sinusoidal Input | 5000 V | — | — | — | 3 mA |
| RF Input (10-500 kc/s) | — | — | — | — | 0.5 mA |
| Pulsed Input | — | — | — | — | 0.35 mA |
Application Notes
A High Voltage Vacuum Rectifier suitable for providing HT power for cathode ray tubes from an RF source or by rectification of the fly-back voltage.
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