Tube-number record
21FPLC
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BrandNational Video Corporation
ClassCathode Ray Tube
BaseSpecial / none
Filament6.3 V @ — mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass, rectangular
Sections1
Filament / Heater
Heater NotesLow voltage electrostatic focus and direct view picture tube.
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage-125 V
H-C Voltage180 V
Audio Performance
Key Features
- Low voltage electrostatic focus
- Metal backed screen
- External conductive coating
- Neutral density filter faceplate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| CRT Display | 14600 V | — | — | — | 0.1 mA |
Application Notes
Shielding of X-radiation may be necessary if anode voltage exceeds 16 kV.
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