AL 4
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BrandPhilips
ClassOutput Pentode
BaseSide-contact (P)
Filament4V @ 1750mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect; A.C.; parallel supply
Absolute Maximum Ratings
Audio Performance
Key Features
- Indirectly heated
- Side-contact base
Application Notes
For the data and characteristics of the AL 4, see EL 3 N.
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