Tube-number record
8AP4-A
0 archive entries
8AP4-A is a tube type in the TubeDatabase archive (class: Television Picture Tube). Recorded specifications: brand General Electric, year 1951, construction Display / CRT, base Small-shell duodecal, socket Duodecal, and maximum plate voltage 9000 V. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3 V @ 0.6 mA
Construction
Primary TypeDisplay / CRT
EnvelopeMetal-cone
Base MaterialSmall-shell duodecal
Sections1
Filament / Heater
Heater NotesIndirectly heated cathode
Absolute Maximum Ratings
Plate Voltage9000 V
Grid 1 Voltage-125 V
H-C Voltage140 V
Audio Performance
Key Features
- Metal-cone envelope
- Direct-view
- Neutral-density faceplate
- External ion-trap magnet
- High ambient light contrast
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions | 7000 V | — | — | — | — |
Application Notes
The 8AP4-A is designed for television applications providing a 5 1/4 by 7-inch picture.
0 results