Tube-number record
7DP4
0 archive entries
7DP4 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand TUNG-SOL, year 1957, construction Display / CRT, base Small Shell Duodecal, socket Duodecal, maximum plate voltage 8000 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRound Glass
Base MaterialSmall Shell Duodecal
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Direct View Television | 6000 V | — | — | — | — |
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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