30PL14
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BrandEdiswan Mazda
ClassTriode Output Beam Tetrode
BaseNoval (B9A)
Filament16V @ 300mA
Construction
Primary TypeBeam Tetrode / Triode
EnvelopeGlass
SectionsTwo
Filament / Heater
Heater NotesIndirectly heated—for series operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation8 W
Grid 2 Voltage250 V
Cathode Current75 mA
H-C Voltage150 V
Audio Performance
Key Features
- Separate cathodes for each section
- High Power for Frame Time Base circuits
- Designed for 110 degree and 114 degree cathode ray tubes
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section | 200V | 3400 | - | 18 | 10mA |
| Tetrode (Average New Valve Case 1) | 55V | - | - | - | 210mA |
| Tetrode (Average New Valve Case 2) | 55V | - | - | - | 235mA |
Application Notes
The output stage should be designed to allow for valve spread and deterioration during life. Characteristics for the triode section are identical to the 6/30L2.
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