INSTRUMENTAL AMPLIFIER WITH INCREASED WEAKENING OF INPUT COPHASED SIGNAL Russian patent published in 2017 - IPC H03F3/45 

FIELD: electricity.

SUBSTANCE: instrumental amplifier with increased weakening of input cophased signal contains three differential cascade (3, 8, 13), on the transistors (1, 2, 6, 7, 11, 12), the output cascade (20), three auxiliary transistors (22-24) and three current stubilizing two-poles (27, 28, 29), wherein additionall three transistors (31, 33, 35) added,and three resistors of local negative response (30, 32, 34) and three current stubilizing two-poles (36-38).

EFFECT: increase of weakening coefficient of the input cophased sygnals of instrumental amplifier.

2 cl, 7 dwg