Tube-number record
4007-A
0 archive entries
4007-A is a tube type in the TubeDatabase archive (class: Half Wave Water Cooled Rectifier). Recorded specifications: brand Standard, construction Rectifier, socket Special / none, maximum plate voltage 45000 V, and maximum plate dissipation 10000 W. The archive does not yet hold a photographed example of this type.
BrandStandard
ClassHalf Wave Water Cooled Rectifier
BaseSpecial / none
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Circuit 1 (1 valve) | 7000 V | — | — | — | 1500 mA |
| Circuit 2 (2 valves) | 14000 V | — | — | — | 3000 mA |
| Circuit 4 (3 valves) | 22500 V | — | — | — | 4500 mA |
Application Notes
Exact filament voltage is marked on bulb of each valve. Water flow requirement is 2 gallons per minute. Water jacket types MS.1362 and 223 LU IA are specified based on anode dissipation levels.
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