Tube-number record
PP5/400
0 archive entries
PP5/400 is a tube type in the TubeDatabase archive (class: Output Triode). Recorded specifications: brand Mazda, construction Triode, socket 4-pin, maximum plate voltage 400 V, and maximum plate dissipation 25 W. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassOutput Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation25 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static (Rating) | 100 V | 6000 | 1500 | 9 | — |
| Typical Operation | 400 V | 7200 | 1220 | 8.8 | 70 mA |
Application Notes
It is recommended that the bias voltage be obtained by means of a self-bias circuit, the resistance being by-passed with a large condenser (approx 50 mfd). The grid filament circuit resistance should not exceed 0.25 megohms.
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