Tube-number record
4EP1
0 archive entries
4EP1 is a tube type in the TubeDatabase archive (class: Oscilloscope Tube). Recorded specifications: brand ETEL (Electronic Tubes Ltd), construction Display / CRT, socket CRT base (B12 family), maximum plate voltage 10000 V, and maximum plate dissipation 3 W. The archive does not yet hold a photographed example of this type.
BrandETEL (Electronic Tubes Ltd)
ClassOscilloscope Tube
BaseCRT base (B12 family)
Filament6.3 V @ 550 mA
Construction
Primary TypeDisplay / CRT
Envelope4-in. flat screen
SectionsSingle stage post deflection accelerator
Filament / Heater
Heater NotesIndirectly heated—suitable for parallel operation only
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical PDA Operation | 4000 V | — | — | — | -0.1 mA |
Application Notes
Designed for symmetrical operation only on both x and y plates. Deflection plates are brought out to side connections to produce low input capacitances and inductances, permitting operation at high frequencies.
Datasheets
Datasheet: 4EP1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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