Tube-number record
EMM 803
0 archive entries
EMM 803 is a tube type in the TubeDatabase archive (class: Indicator Tube). Recorded specifications: year 1963, construction Display / CRT, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
ClassIndicator Tube
BaseNoval (B9A)
Filament6.3 V @ 0.3 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesParallelspeisung
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| System I | 250 V | — | 470000 | — | 0.45 mA |
| System II | 250 V | — | 1000000 | — | 0.21 mA |
Application Notes
The control bars are connected to the anode of the respective triode system in the tube.
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