Tube-number record
PEN.24
0 archive entries
PEN.24 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mazda, construction Pentode, socket Octal, and maximum plate voltage 150 V. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassOutput Pentode
BaseOctal
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage150 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 100 V | 5700 | — | — | 4.2 mA |
| Typical Operation 2 | 120 V | 5700 | — | — | 5 mA |
Application Notes
The bias should be obtained by means of a common resistance in the H.T. negative lead and this should be by-passed with a large condenser. If transformer coupling is used, a resistance of 50,000-70,000 ohms should be connected across the primary winding. If resistance-capacity coupling is used, the grid circuit resistance should not exceed 500,000 ohms.
Datasheets
Datasheet: PEN24.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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