Tube-number record
UA025A
0 archive entries
UA025A is a tube type in the TubeDatabase archive (class: Argon-filled half-wave rectifier). Recorded specifications: brand TESLA, construction Rectifier, base Metal/Screw, socket Screw / Edison base, and maximum plate voltage 10000 V. The archive does not yet hold a photographed example of this type.
BrandTESLA
ClassArgon-filled half-wave rectifier
BaseScrew / Edison base
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeSpecial glass
Base MaterialMetal/Screw
SectionsSingle
Filament / Heater
MaterialOxide-coated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Full-wave rectifier (Obr. 1) | 3500 V | — | — | — | 500 mA |
| Three-phase rectifier (Obr. 2) | 3500 V | — | — | — | 750 mA |
Application Notes
The tube must be warmed up for at least 1 minute before anode voltage is applied. The rectified output depends on the circuit configuration (Full-wave, Bridge, etc.).
Datasheets
Datasheet: UA025A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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