Tube-number record
A47-26W/R
0 archive entries
A47-26W/R is a tube type in the TubeDatabase archive (class: Television Tube (CRT)). Recorded specifications: brand Mullard, construction Display / CRT, base Glass, socket Special / none, and maximum plate voltage 20000 V. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassTelevision Tube (CRT)
BaseSpecial / none
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeReinforced glass
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesSuitable for series or parallel operation. Surge voltage must not exceed 9.5V r.m.s.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Modulation (V_a1=400V) | 20000 V | — | — | — | — |
| Grid Modulation (V_a1=500V) | 20000 V | — | — | — | — |
Application Notes
X-ray shielding is advisable when operated above 20kV. Metal band (B) should be connected directly to chassis in AC receivers.
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