Tube-number record
T921
0 archive entries
T921 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand English Electric Valve, construction Electrostatic Focus, Magnetic Deflection, socket Octal, and maximum plate voltage 13000 V. The archive does not yet hold a photographed example of this type.
BrandEnglish Electric Valve
ClassCathode Ray Tube
BaseOctal
Filament6.3 V @ 1100 mA
Construction
Primary TypeElectrostatic Focus, Magnetic Deflection
Envelope9-inch diameter, aluminium backed screen
SectionsSingle
Filament / Heater
Heater NotesIndirectly Heated, Oxide Coated
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 8000 V | — | — | — | — |
| Condition 2 | 12000 V | — | — | — | — |
Application Notes
Designed for radar applications. The fluoride screen is sensitive to burn and should not be operated with slow moving spots. Anode 1 must be at least 50 volts positive with respect to anode 2 to prevent secondary electrons reaching the screen.
Datasheets
Datasheet: T921.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results