Tube-number record
4AP10
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4AP10 is a tube type in the TubeDatabase archive (class: Skiatron / Dark-Trace Cathode Ray Tube). Recorded specifications: brand RCA, construction Display / CRT, socket Octal, and maximum plate voltage 9900 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassSkiatron / Dark-Trace Cathode Ray Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
Envelope4-1/8 inch bulb
Sections1
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage9900 V
Grid 2 Voltage500 V
Grid 1 Voltage-125 V
H-C Voltage125 V
Audio Performance
Key Features
- Dark trace on white background
- Special phosphor No.10 for light absorption
- Polished high-quality face plate
- Designed for Schmidt reflection-optics system
- Fine spot electron gun
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 9000 V | — | — | — | 0.1 mA |
Application Notes
The tube requires high illumination (8000 foot-candles) and cooling air to maintain faceplate temperature near 60°C. Darkening removal is achieved via heating to 125°C or scanning with a defocused spot.
Datasheets
Datasheet: 4AP10.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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