Tube-number record
A 56-11 X
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A 56-11 X is a tube type in the TubeDatabase archive (class: Colour TV picture tube). Recorded specifications: brand Telefunken, construction Display / CRT, base Glass, socket CRT base (B12 family), and maximum plate voltage 27500 V. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassColour TV picture tube
BaseCRT base (B12 family)
Filament— V @ 900 mA
Construction
Primary TypeDisplay / CRT
EnvelopeAll-glass, grey glass screen
Base MaterialGlass
SectionsTriple electron gun (Delta)
Filament / Heater
Heater NotesAC/DC heating, max 9.5V during heating-up period
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Operation | 25000 V | — | — | — | — |
Application Notes
The tube may be used without a safety plate due to metal shielding/armoring. To prevent hum, the AC component of the heater-cathode voltage should be kept below 20V.
Datasheets
Datasheet: A56-11X.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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