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

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Tube-number record

2V/531E

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BrandStandard Telephones and Cables Limited
ClassHalf-Wave Mercury-Vapour Rectifier
BaseSpecial / none

Construction

Primary TypeRectifier
EnvelopeGlass
Sections1

Filament / Heater

MaterialOxide-coated, shielded
Warm-up Time60s

Absolute Maximum Ratings

Plate Voltage20000 V
Cathode Current2500 mA

Audio Performance

Key Features
  • Mercury-Vapour
  • Oxide-coated filament
  • Shielded filament
  • High power

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Single-Phase Full Wave (In phase)7000 V———5000 mA
Single-Phase Full Wave (Quadrature)7000 V———10000 mA
Three-Phase Full Wave (In phase)8150 V———

Application Notes

After shipment or transit the valve must be pre-heated for not less than 30 minutes before any anode voltage is applied. Forced air cooling is recommended and required for high temperature operation.

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    15000 mA