FIELD: amplifiers and generators for broadband audio-frequency transmitting channels. SUBSTANCE: amplifier has paraphase converter, two switching power amplifiers 2, 3 whose outputs are series-interconnected through choke coils 4, 5 and transformers 7,8 and connected to filter capacitor 6. Additional capacitor provides for parallel connection of outputs of switching power amplifiers 2, 3 thereby implementing class ABD mode of amplification distinguished by high efficiency and low distortions of output signals. EFFECT: enhanced power efficiency and reliability at improved characteristics of output signals. 3 dwg
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