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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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HR2 vacuum tube outline illustration

Tube-number record

HR2

0 archive entries

HR2 is a tube type in the TubeDatabase archive (class: Vacuum High Voltage Rectifier). Recorded specifications: brand FERRANTI, year 1954, construction Rectifier, socket Miniature 7-pin (B7G), and maximum plate voltage 5500 V. The archive does not yet hold a photographed example of this type.

BrandFERRANTI
ClassVacuum High Voltage Rectifier
BaseMiniature 7-pin (B7G)
Filament4 V @ 500 mA

Construction

Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeMiniature Glass
Sections1

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Absolute Maximum Ratings (50 c/s capacitor filter)5500 V—50000—5 mA

Application Notes

This valve may be used with simultaneous switching providing the RMS input voltage is not more than 3.5 kV and the rectified current does not exceed 1.5 mA.

Filters

0 tubes found

Manufacturers

Brands

    0 results
    Plate Voltage5500 V
    Cathode Current5 mA

    Audio Performance

    Key Features
    • Miniature indirectly heated
    • Half-Wave High Voltage Rectifier
    • Suitable for E.H.T. supplies
    • Any mounting position