Tube-number record
3AMP1
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BrandPhilips
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 330 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated cathode
Absolute Maximum Ratings
Plate Voltage800 V
Plate Dissipation0.5 W
Grid 2 Voltage800 V
Grid 1 Voltage-160 V
H-C Voltage125 V
Audio Performance
Key Features
- Low voltage cathode ray tube
- Electrostatic focusing
- Double electrostatic deflection
- Transparent conductive coating for contrast and stability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Operation | 500 V | — | — | — | 0.0005 mA |
Application Notes
Transparent conductive coating connected to Grid 2 and 4 makes high potential operation possible with reduced risk of picture distortion when touching the face.
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