Tube-number record
7BJP2
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BrandElectronic Tube Corp.
ClassCathode Ray Tube
BaseCRT / special base
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
Envelope7 inch diagonal square face
Sections5 beam
Filament / Heater
Heater NotesHeater current O03 Amperes normalized to 300 mA
Absolute Maximum Ratings
Plate Voltage7700 V
Plate Dissipation6 W
Grid 2 Voltage3850 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- Five beam
- Electrostatic deflection
- Electrostatic focus
- Independently controllable beams
- Increased deflection sensitivity in D3D4 direction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 4000 V | — | — | — | 0.05 mA |
Application Notes
Accelerator Power Input (Avg.) should be limited to 6 watts. Visual extinction of the undeflected, focused spot occurs between -50 to -90 V. Deflecting electrode circuit resistances should be approximately equal; values up to five megohms may be used for low beam current operation.
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