Tube-number record
UY 21
0 archive entries
UY 21 is a tube type in the TubeDatabase archive (class: Rectifier). Recorded specifications: construction High vacuum, base metal/glass, socket Loctal, and maximum plate voltage 250 V. The archive does not yet hold a photographed example of this type.
ClassRectifier
BaseLoctal
Filament50 V @ 100 mA
Construction
Primary TypeHigh vacuum
Rectifier Typesingle-phase
Envelopeglass
Base Materialmetal/glass
Sectionssingle
Filament / Heater
Heater NotesIndirect heating, series string 100 mA
Absolute Maximum Ratings
Plate Voltage250 V
Cathode Current140 mA
H-C Voltage550 V
Audio Performance
Key Features
- Indirectly heated
- Single phase rectifier
- Designed for 100mA series heater chains
- High vacuum
Application Notes
Used in AC/DC radio receivers, particularly those requiring high current for push-pull output stages like EBL 21.
Datasheets
Datasheet: UY21.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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