21EVP4
0 Tubes in archive
BrandPHILCO
ClassTelevision Picture Tube
BaseB7-208
Filament2.68V @ 450mA
Construction
Primary TypePicture Tube
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesControlled warm-up time for series string applications
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 2 Voltage550 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- Internal magnetic shielding
- Metal backed screen
- Straight gun
- No ion trap magnet
- Extremely short neck
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Drive Service | 16000V | - | - | - | - |
| Cathode Drive Service | 16000V | - | - | - | - |
Sort by
Showing 1 to 0 of 0 results