Tube-number record
90EY4P
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ClassOscilloscope Tube
BaseCRT base (B12 family)
Filament4 V @ 1000 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater Notesa.c. or d.c. volts
Absolute Maximum Ratings
Plate Voltage4000 V
Grid 1 Voltage-80 V
Audio Performance
Key Features
- Electrostatic Focus
- Electrostatic Deflection
- Post Deflector Accelerator
- Long Persistence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 2000 V | — | — | — | — |
Application Notes
The angle between the trace produced by X1 and X2 and the trace produced by Y1 and Y2 is 90° + 3°. The undeflected focused spot will fall within a circle having a 6 mm radius concentric with the centre of the tube face.
Datasheets
Datasheet: 90EY4P.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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