SIGNAL AMPLIFIER CIRCUIT, VOLTAGE CONVERTER AND SYSTEM Russian patent published in 2020 - IPC H03F1/30 

FIELD: physics.

SUBSTANCE: invention relates to a signal amplifier circuit for amplifying a signal, in particular to an audio amplifier circuit comprising: at least one first amplifier transistor (Q1) and at least one second amplifier transistor (Q2), wherein the first amplifier transistor (Q1) and the second amplifier transistor (Q2) are connected to each other in a push-pull circuit and are powered by the amplifier voltage (V+, V-); and one or more bias voltage diodes (D1, D2), which in each case are thermally coupled to respective amplifying transistors (Q1, Q2), wherein diodes (D1, D2) of offset voltage are arranged to reduce or eliminate distortion of "step" type, in parallel connection to amplifying transistors (Q1, Q2), wherein bias voltage diodes (D1, D2) are at least partially fed by voltage source (UA) independent of amplifier voltage source (V+, V-). Invention also relates to a system and a voltage converter for generating DC voltage at the output side, with a first transformer (T1) and a second transformer (T2) connected to the first transformer (T1).

EFFECT: invention enables to design a signal amplifier circuit which can amplify the signal with negligible distortion.

14 cl, 8 dwg