Vf 2.8 Volt / If 0.025 Ampere / Direct / Battery =
Descrizione
Operation of the centre-tapped filament in parallel is possible for a voltage of 1.4 and a current of 50mA. Operation of a single section is also permitted where a power output of 100mW is achieved compared with 200mW for both sections operating - same HT conditions applying.
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