Tube-number record
BS440
0 archive entries
BS440 is a tube type in the TubeDatabase archive (class: TR Tube). Recorded specifications: brand English Electric Valve Company Limited, construction Display / CRT, socket Waveguide, maximum plate voltage 1100 V, and maximum plate dissipation 0.1 W. The archive does not yet hold a photographed example of this type.
BrandEnglish Electric Valve Company Limited
ClassTR Tube
BaseWaveguide
Construction
Primary TypeDisplay / CRT
EnvelopeMetal/Waveguide
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1100 V
Plate Dissipation0.1 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Primer Operation | -1000 V | — | — | — | 0.11 mA |
Application Notes
The primer supply voltage must be applied at least 5 seconds before the tube is required to operate. Primer current must be limited by a series resistance of 5.5 Megohms.
Datasheets
Datasheet: BS440.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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