Tube-number record
DH 3-91
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DH 3-91 is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Philips, construction Display / CRT, socket Loctal, maximum plate voltage 1000 V, and maximum plate dissipation 0.002 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassCathode-Ray Tube
BaseLoctal
Filament6.3 V @ 550 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirect by A.C. or D.C. parallel supply
Absolute Maximum Ratings
Plate Voltage1000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Visual extinction focused spot | 500 V | — | — | — | — |
Application Notes
Primarily intended for indicating purposes and monitoring. Features a transparent conducting film between the phosphor and faceplate, connected to the accelerator, allowing operation with cathode at earth potential without electrostatic body effect.
Datasheets
Datasheet: DH3-91.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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