QUICK-ACTING BUFFER AMPLIFIER Russian patent published in 2010 - IPC H03F3/26 H03F3/50 

FIELD: radio engineering.

SUBSTANCE: invention may be used as output device for amplification of fast-varying analogue signals by power (buffer amplifier - BA), in structure of input cascades of analogue microchips of various functional purpose, for instance operational amplifiers, drivers of communication lines. BA comprises the first n-p-n (1) and second p-n-p (2) input transistors (T), with combines bases joined to inlet (3) of BA, at the same time emitter T (1) is connected to collector of the first (4) auxiliary n-p-n T and base of the first (5) output p-n-p T, emitter T (2) is connected to collector of the second (6) auxiliary p-n-p T and base of the second (7) outlet n-p-n T, and emitters T (5) and T (7) are connected to load (8); emitter T (4) is connected to bus of the first (9) source of supply (SS) via the first additional dipole (10), and base is connected to the first (11) shift supply source (SSS), emitter T (6) is connected to bus of the second (12) SS via the second (13) additional dipole, and base T (6) is connected to SSS (14). The circuit comprises the first (15) emitter repeater (ER) of voltage at n-p-n T, besides inlet (3) of BA is connected to inlet of ER (15), and outlet of ER (15) - via the first (16) additional capacitor (C) is connected to emitter T (6); the second (17) ER to p-n-p T, besides inlet (3) of BA is connected to inlet of the second (17) ER, and outlet of ER (17) - via the second (18) additional C is connected to emitter T (4).

EFFECT: improved efficiency.

3 cl, 9 dwg