7DP4
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BrandTUNG-SOL
ClassCathode Ray Tube
BaseSmall Shell Duodecal 7 Pin
Filament6.3V @ 600mA
Construction
Primary TypeCathode Ray Tube
EnvelopeRound Glass
Base MaterialSmall Shell Duodecal
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage8000 V
Plate Dissipation6 W
Grid 2 Voltage410 V
Grid 1 Voltage-125 V
H-C Voltage150 V
Audio Performance
Key Features
- Unipotential Cathode
- Electrostatic Focus
- Round Glass Construction
- Magnetic Deflection
- External Conductive Coating
- External Double Field Ion Trap
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Direct View Television | 6000V | - | - | - | - |
Application Notes
The product of Anode #2 voltage and average Anode #2 current should never exceed 6 Watts. Brilliance and definition decrease with decreasing Anode #2 voltage; it should not be less than 5000 volts.
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