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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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Tube-number record

U37Z

0 archive entries

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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Fly-back EHT Source————0.1 mA
R.F. Oscillator EHT Source5300 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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