Tube-number record
21DKP4A
0 archive entries
BrandWestinghouse
ClassTelevision Picture Tube
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 300 mA
Construction
Primary TypeRectangular Glass
EnvelopeGlass
Base MaterialPlastic/Glass
SectionsSingle
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Heater NotesControlled Warm-up Heater
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage-140 V
H-C Voltage180 V
Audio Performance
Key Features
- Light Weight Bulb
- External Conductive Coating
- Spherical Faceplate
- No Ion Trap
- Neutral Gray Glass
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 16000 V | — | — | — | — |
Application Notes
Operation with anode voltage less than 12000 volts is not recommended. X-ray shielding may be needed for voltages in excess of 16 kilovolts.
0 results