4CP7
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BrandLansdale Tube Company
ClassCathode Ray Tube
BaseB5-57
Filament6.3V @ 600mA
Construction
Primary TypeMagnetic focus and magnetic deflection
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage20000 V
Grid 1 Voltage-350 V
H-C Voltage175 V
Audio Performance
Key Features
- Long persistence cascade fluorescent screen
- Small spot of high intensity
- Magnetic focus
- Magnetic deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard | 20000V | - | - | - | 0.1mA |
Application Notes
Anode and Grid #2 are connected together within the tube. Cathode should be returned to one side or the mid-tap of the heater transformer winding. Visual extinction of undeflected focused spot occurs between -70 and -110V.
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