Tube-number record
4009-B
0 archive entries
4009-B is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: brand Standard, construction Triode, socket Special / none, maximum plate voltage 17500 V, and maximum plate dissipation 20000 W. The archive does not yet hold a photographed example of this type.
BrandStandard
ClassPower Triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass and Metal (Water Cooled)
SectionsSingle
Filament / Heater
MaterialPure Tungsten
Absolute Maximum Ratings
Plate Voltage17500 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Constants | — | 6700 | 6000 | 40 | 1000 mA |
| Class B A.F. Amp (Max Signal) | 15000 V | — | — | — | 2000 mA |
| Class B Telephony (Modulated Carrier) | 15000 V | — | — | — |
Application Notes
The grid lead has been brought out through the side of the bulb compared to the 4009-A. Requires type ES.5706-I grid connectors.
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