Tube-number record
U37Z
0 archive entries
U37Z is a tube type in the TubeDatabase archive (class: Half Wave Rectifier). Recorded specifications: brand Marconi, year 1952, construction Vacuum Tube, base Glass, socket Flexible / flying leads, and maximum plate voltage 15000 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassHalf Wave Rectifier
BaseFlexible / flying leads
Construction
Primary TypeVacuum Tube
Rectifier Typehalf-wave
EnvelopeTubular
Base MaterialGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage15000 V
Cathode Current2 mA
Audio Performance
Key Features
- Miniature
- Directly Heated
- Tubular Bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Fly-back EHT Source | — | — | — | — | 0.1 mA |
| R.F. Oscillator EHT Source | 5300 V | — | — | — | 0.1 mA |
Application Notes
Designed for conditions where the anode voltage rises at approximately the same rate as the filament voltage, e.g. in fly-back and R.F. oscillator EHT systems.
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