3BGP1
0 Tubes in archive
BrandSYLVANIA
ClassCathode Ray Tube
BaseB8-181
Filament1.5V @ 140mA
Construction
Primary TypeRectangular CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesLow heater power design
Absolute Maximum Ratings
Plate Voltage2750 V
Plate Dissipation6 W
Grid 2 Voltage1100 V
Grid 1 Voltage-200 V
Audio Performance
Key Features
- Compact, rectangular direct view
- Low heater power (1.5V, 140mA)
- Clear, Pressed Faceplate
- Electrostatic Deflection and Focus
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Operation | 2000V | - | - | - | - |
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