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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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HR3 vacuum tube outline illustration

Tube-number record

HR3

0 archive entries

HR3 is a tube type in the TubeDatabase archive (class: High Voltage Rectifier). Recorded specifications: brand Ferranti, year 1954, construction Indirectly heated, socket Miniature 7-pin (B7G), and maximum plate voltage 5000 V. The archive does not yet hold a photographed example of this type.

BrandFerranti
ClassHigh Voltage Rectifier
BaseMiniature 7-pin (B7G)
Filament4 V @ 500 mA

Construction

Primary TypeIndirectly heated
Rectifier TypeHalf-Wave
EnvelopeMiniature Glass
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage5000 V

Application Notes

May be used with simultaneous switching providing the R.M.S. input voltage is not more than 3.5 kV. and the rectified current does not exceed 3.0 mA.

Filters

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Manufacturers

Brands

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    Cathode Current15 mA

    Audio Performance

    Key Features
    • Miniature
    • Indirectly heated
    • Half-Wave High Voltage Rectifier
    • Any mounting position