DIFFERENTIAL AMPLIFIER Russian patent published in 2009 - IPC H03F3/45 

FIELD: radio engineering.

SUBSTANCE: differential amplifier contains first (1) and second (2) access transistors with joined bases, first (3) and second (4) current-stabilising two-terminal networks connected to emitters of corresponding first (1) and second (2) access transistors and first (5) and second (6) current inputs of differential amplifier, load circuit (7) connected to collectors of first (1) and second (2) access transistors. Between emitters of first (1) and second (2) access transistors two series-connected additional resistors (8) and (9) are engaged, their common node (10) is connected to bases of first (1) and second (2) access transistors and additional current-stabilising two-terminal network (12) by means of additional p-n transition (11).

EFFECT: extension of range of alteration of input in-phase signals.

4 cl, 8 dwg