3HP7
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BrandRCA
ClassCathode-Ray Tube
BaseLong Medium Shell Octal 8-Pin
Filament6.3V @ 600mA
Construction
Primary TypeHigh-Vacuum Cathode-Ray Tube
EnvelopeGlass
Base MaterialPlastic
Sections1
Filament / Heater
Heater NotesCoated Unipotential Cathode; a-c or d-c
Absolute Maximum Ratings
Plate Voltage5500 V
Grid 2 Voltage220 V
H-C Voltage125 V
Audio Performance
Key Features
- Magnetic Focusing
- Magnetic Deflection
- High-Vacuum
- Snap Terminal Side Connection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 4000V | - | - | - | - |
| Typical Operation 2 | 5000V | - | - | - | - |
Application Notes
Anode voltage should not be less than 4000 volts. Brilliance and definition decrease with decreasing anode voltage. Visual cut-off values are subject to a variation of plus/minus 50 percent.
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