4EP1
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BrandETEL (Electronic Tubes Ltd)
ClassOscilloscope Tube
BaseB12F
Filament6.3V @ 550mA
Construction
Primary TypeCathode Ray Tube
Envelope4-in. flat screen
SectionsSingle stage post deflection accelerator
Filament / Heater
Heater NotesIndirectly heated—suitable for parallel operation only
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation3 W
Grid 2 Voltage1500 V
Grid 1 Voltage-200 V
H-C Voltage250 V
Audio Performance
Key Features
- 4-in. flat screen
- Post deflection accelerator
- Electrostatic focus
- Electrostatic deflection
- Beam trap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical PDA Operation | 4000V | - | - | - | -0.1mA |
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.
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