Tube-number record
PTA
0 archive entries
PTA is a tube type in the TubeDatabase archive (class: Universal Output Pentode). Recorded specifications: brand Ferranti, construction Pentode, socket 7-pin (non-miniature), maximum plate voltage 200 V, and maximum plate dissipation 8 W. The archive does not yet hold a photographed example of this type.
BrandFerranti
ClassUniversal Output Pentode
Base7-pin (non-miniature)
Filament13 V @ 0.3 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesSuitable for 0.3 amp series strings
Absolute Maximum Ratings
Plate Voltage200 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 100 V | 4000 | — | — | — |
Application Notes
Especially suitable for car receivers and universal A.C./D.C. sets utilizing 0.3 amp valves. Recommended resistance condenser filter (10,000 ohms and 0.01 mfd) across primary winding of output transformer to prevent increase of load impedance with frequency.
Datasheets
Datasheet: PTA.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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