Tube-number record
27VP4
0 archive entries
BrandNational Video Corporation
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass, rectangular
Sections1
Filament / Heater
Heater NotesPeak Heater-Cathode Voltage: 410V during warm-up, 180V operating
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage-140 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focus
- Magnetic deflection
- 90 degree deflection angle
- Gray glass faceplate
- No ion-trap gun
- Metal backed screen
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operating Conditions | 16000 V | — | — | — | 0.1 mA |
Application Notes
Shielding of x-ray radiation may be necessary if the anode is operated in excess of 16,000 volts.
0 results