Tube-number record
A59-25W
0 archive entries
A59-25W is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Thorn-AEI, construction Display / CRT, base B8H sparkguard, socket CRT base (B8H), and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
BrandThorn-AEI
ClassCathode Ray Tube
BaseCRT base (B8H)
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular Reinforced
Base MaterialB8H sparkguard
Sections1
Filament / Heater
Heater NotesConnect at chassis end in a series chain
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage700 V
H-C Voltage250 V
Audio Performance
Key Features
- RIMGUARD II
- Electrostatic Focus
- Magnetic Deflection
- Aluminised Screen
- Non Ion Trap
- Integral Mounting Lugs
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Modulation | 18000 V | — | — | — | 0.425 mA |
| Cathode Modulation | 18000 V | — | — | — | 0.425 mA |
Application Notes
X-ray radiation shielding may be necessary if operated above 16kV.
Datasheets
Datasheet: A59-25W.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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