Tube-number record
HL/DD.1320
0 archive entries
HL/DD.1320 is a tube type in the TubeDatabase archive (class: Double Diode Triode). Recorded specifications: brand Mazda, construction Multi-section, socket 7-pin (non-miniature), and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassDouble Diode Triode
Base7-pin (non-miniature)
Filament13 V @ 200 mA
Construction
Primary TypeMulti-section
EnvelopeMetallised
SectionsTriode, 2 Diodes
Filament / Heater
Heater NotesSuitable for D.C., A.C./D.C. Mains, or car radio receivers
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 100 V | 2000 | 15000 | 30 | — |
Application Notes
Designed to operate as a combined detector-amplifier with or without A.V.C. Suitable for amplified A.V.C. circuits where the triode unit acts as a combined audio-frequency amplifier and D.C. amplifier. One diode anode (Pin 1) typically for audio frequency detection and Pin 3 for A.V.C. voltage.
Datasheets
Datasheet: HLDD1320.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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