Tube-number record
UM84
0 archive entries
UM84 is a tube type in the TubeDatabase archive (class: Indicator Tube). Recorded specifications: brand Philips, construction Display / CRT, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassIndicator Tube
BaseNoval (B9A)
Filament12.6 V @ 100 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsTriode and indicator
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; Series supply
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Tuning Indicator (max shadow) | 170 V | — | — | — | 0.3 mA |
| Tuning Indicator (min shadow) | 170 V | — | — | — | 0.04 mA |
Datasheets
Datasheet: UM84.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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