7BDP
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BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseB25-137
Filament6.3V @ 600mA
Construction
Primary TypeCRT
Envelope7-Inch diagonal square face
Sections5-beam
Filament / Heater
Heater NotesIndependently controllable five-beam structure
Absolute Maximum Ratings
Plate Voltage3500 V
Plate Dissipation6 W
Grid 2 Voltage7900 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- 7-Inch diagonal square face
- Five beam
- Electrostatic deflection
- Electrostatic focus
- Independent beam control
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operating Conditions | 2000V | - | - | - | 0.05mA |
Application Notes
Each beam is independently controllable and scans separate areas of the screen. Deflection and acceleration connections are brought out through the bulb wall to minimize lead inductance.
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