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

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

4037-A

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BrandStandard Valves
ClassMercury Vapour Rectifier
Base4-pin

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle

Filament / Heater

MaterialOxide coated

Absolute Maximum Ratings

Plate Voltage1000 V
Cathode Current800 mA

Audio Performance

Key Features
  • Oxide coated filament
  • Constant voltage type

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Half-wave rectifier300 V———250 mA

Application Notes

Hot cathode mercury vapour rectifier with oxide coated filament.

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