Tube-number record
5/28AM
0 archive entries
5/28AM is a tube type in the TubeDatabase archive (class: Ultra High Resolution Display Tube). Recorded specifications: brand Ferranti, year 1961, construction Display / CRT, socket Duodecal, and maximum plate voltage 25000 V. The archive does not yet hold a photographed example of this type.
BrandFerranti
ClassUltra High Resolution Display Tube
BaseDuodecal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage25000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Anode Voltage Operation | 15000 V | — | — | — | — |
Application Notes
X-RAY WARNING: When operated at an anode voltage in excess of 16 kV, shielding may be required to protect against harmful X-ray radiation.
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