Tube-number record
21DJP4
0 archive entries
BrandSylvania
ClassTelevision Picture Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeDisplay / CRT
EnvelopeJ171D or JI71E
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesHeater warm-up time 11 seconds
Absolute Maximum Ratings
Plate Voltage22000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- Electrostatic Focusing
- Magnetic Deflection
- Aluminized P4 Phosphor
- No Ion Trap
- Gray Filter Glass
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 16000 V | — | — | — | — |
Application Notes
X-ray radiation shielding may be necessary for protection if operated above 16,000 volts. External conductive coating must be grounded.
0 results