Tube-number record
PT2
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PT2 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Marconi, construction Pentode, and maximum plate voltage 150 V. The archive does not yet hold a photographed example of this type.
BrandMarconi
ClassPentode
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage150 V
Audio Performance
Key Features
- New pentode output valve
- Designed for economy in current consumption
- High amplification factor
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 150 V | 1650 | 55000 | 90 | 6.5 mA |
| Typical | 125 V | — | — | — | 5.8 mA |
| Typical | 100 V | — | — | — | 3 mA |
Application Notes
Ideal for many portable and other battery operated receivers; adequate for operation of moving iron speakers.
Datasheets
Datasheet: PT2.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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