Tube-number record
DY 900
0 archive entries
DY 900 is a tube type in the TubeDatabase archive (class: High voltage rectifier for TV receivers). Recorded specifications: brand Telefunken, construction Rectifier, socket Miniature 7-pin (B7G), and maximum plate voltage 24000 V. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassHigh voltage rectifier for TV receivers
BaseMiniature 7-pin (B7G)
Filament1.4 V @ 170 mA
Construction
Primary TypeRectifier
Rectifier TypeVacuum rectifier
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated; Parallel supply. Adjustment via optical comparison of heating color to auxiliary tube is permitted for RF or flyback pulse feeding.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectification of line flyback pulses | 16000 V | — | — | — | 0.15 mA |
Application Notes
Filament voltage should be adjusted to 1.4V at 100 µA load. Voltage drop should not exceed 15% when current increases to 300-450 µA. Negative peak voltage spikes from flyback can reach 22% of Ua.
Datasheets
Datasheet: DY900.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results