Tube-number record
90EO4
0 archive entries
90EO4 is a tube type in the TubeDatabase archive (class: Oscilloscope Tube). Recorded specifications: construction Display / CRT, socket CRT base (B12 family), and maximum plate voltage 5000 V. The archive does not yet hold a photographed example of this type.
ClassOscilloscope Tube
BaseCRT base (B12 family)
Filament4 V @ 1000 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater Notesac or dc
Absolute Maximum Ratings
Plate Voltage5000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation 1 | 4000 V | — | — | — | — |
| Operation 2 | 2000 V | — | — | — | — |
Application Notes
The angle between X and Y traces is 90 degrees. Deflection spot within 6mm radius of center.
Datasheets
Datasheet: 90EO4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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