Tube-number record
4FP
0 archive entries
4FP is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Allen B. Du Mont Laboratories, Inc., construction Beam tetrode / beam power, socket CRT base (B12 family), maximum plate voltage 3300 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.
BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 600 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage3300 V
Plate Dissipation6 W
Grid 2 Voltage6600 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focusing
- Electrostatic deflection
- Post acceleration
- 3 1/2-inch square screen
- High brightness
- Small spot size
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Operation | 2000 V | — | — | — | — |
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