DIFFERENTIAL AMPLIFIER WITH LOW VOLTAGE OF ZERO SHIFT Russian patent published in 2011 - IPC H03F3/45 

FIELD: electricity.

SUBSTANCE: differential amplifier comprises the first (1) and second (2) inlet transistors (T), emitters of which are connected to each other and are connected to the first (3) supply source via the first (4) current-stabilising dipole, a collector of the first (1) inlet T is connected to a collector and a base of the first (5) auxiliary T and a base of the second (6) auxiliary T, emitters of the first (5) and second (6) auxiliary T are connected to the second (7) supply source, a collector of the second (2) inlet T is connected to a collector of the second (6) auxiliary T, the first (8) and second (9) outlet T with combined bases, emitters of which are connected to the second (7) source of supply, the collector of the first (8) outlet T is connected to the base of the third (10) outlet T and via the second (11) current-stabilising dipole is connected to the first (3) supply source, a collector of the second (9) outlet T is connected to the outlet of the device and the emitter of the third (10) outlet T, the collector of which is connected to the first (3) supply source. The bases of the first (8) and the second (9) outlet T are connected to the collector of the second (6) auxiliary T.

EFFECT: Ucm reduction.

2 cl, 6 dwg