FIELD: radio engineering.
SUBSTANCE: device consists of feedback circuit, which contains power divider, detector, control unit, resistor, bipolar transistor, at that power divider is made as current transformer that consists of ferrite ring and two windings, the primary winding is made in the form of strip conductor passed through ferrite ring, the ends of which form input and the first output of power divider, and the secondary winding is made of wire wound on ferrite ring, the first end of which is connected to conductor that is common for amplifier and feedback circuit, and the second end forms the second output of power divider, at that resistor is installed in the opening of ferrite ring, and its outputs embrace the ring from both sides and are galvanically connected between each other.
EFFECT: provision of amplifier protection both in case of load resistance change and input overload.
1 dwg
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