Tube-number record
9QP4-A
0 archive entries
9QP4-A is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand General Electric, construction Other / special, socket Duodecal, and maximum plate voltage 6800 V. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassCathode Ray Tube
BaseDuodecal
Filament4.7 V @ 300 mA
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsSingle gun with Ion-trap
Filament / Heater
Warm-up Time11s
Heater NotesSeries-string operation
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cathode-Drive-Service | 5500 V | — | — | — | — |
Application Notes
The 9QP4-A is designed for small, lightweight portable television receivers and features a low current heater for series-string operation.
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