Tube-number record
DH63
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DH63 is a tube type in the TubeDatabase archive (class: Double Diode Triode). Recorded specifications: brand Marconi, construction Triode, socket Octal, and maximum plate voltage 340 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassDouble Diode Triode
BaseOctal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsDouble Diode Triode
Filament / Heater
Heater NotesSeparate cathodes taken out to different pins.
Absolute Maximum Ratings
Plate Voltage340 V
Audio Performance
Key Features
- Detection
- A.V.C.
- Resistance coupled L.F. amplification
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Anode load 1.0 meg. | 340 V | 1200 | — | — | 0.14 mA |
| Anode load 0.25 meg. | 340 V | 1200 | — | — | 0.7 mA |
| Anode load 1.0 meg. | 275 V | 1200 | — | — | 0.11 mA |
| Anode load 0.25 meg. | 275 V | 1200 | — | — | 0.6 mA |
Application Notes
The total effective grid to cathode resistance of the DH63 should not exceed 4 megohms. When used as an amplifier, the grid leak of the subsequent valve should not be less than 0.5 megohm.
Datasheets
Datasheet: DH63.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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