Tube-number record
AC2/PEN
0 archive entries
AC2/PEN is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Ediswan / Mazda, construction Pentode, socket 7-pin (non-miniature), maximum plate voltage 250 V, and maximum plate dissipation 10 W. The archive does not yet hold a photographed example of this type.
BrandEdiswan / Mazda
ClassOutput Pentode
Base7-pin (non-miniature)
Filament4 V @ 1750 mA
Construction
Primary TypePentode
EnvelopeST-16
Sectionssingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 250 V | 8000 | — | — | 32 mA |
Application Notes
In receivers employing diode A.V.C. it is possible to obtain ample power output by feeding the AC.2/PEN direct from the diode. Grid bias must be obtained by means of a self-bias resistance. A resistance of approximately 50 ohms should be inserted in the anode circuit close to the anode pin to prevent parasitic oscillations. Grid to cathode circuit resistance should not exceed 1 megohm.
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