Tube-number record
A59-23W/R
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A59-23W/R is a tube type in the TubeDatabase archive (class: Television Tube). Recorded specifications: brand Mullard, construction Display / CRT, socket Special / none, and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassTelevision Tube
BaseSpecial / none
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeReinforced envelope
SectionsSingle
Filament / Heater
Heater NotesSuitable for series or parallel operation
Absolute Maximum Ratings
Plate Voltage20000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Visual extinction of focused raster (grid modulation) | 20000 V | — | — | — | — |
| Visual extinction of focused raster (cathode modulation) | 20000 V | — | — | — | — |
Application Notes
X-ray shielding is advisable if operated above 20kV. Surge heater voltage must not exceed 9.5V r.m.s. for series operation. Pin 5 must be connected to the external conductive coating for flashover protection.
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