Circuit arrangement comprising a differential amplifier

Details Circuit arrangement comprising a differential amplifier Circuit arrangement comprising a differential amplifier

H - Electricity

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H03F 3/45 (2006.01) H03F 1/34 (2006.01) H03F 3/26 (2006.01) H03G 1/00 (2006.01) H03G 1/04 (2006.01)

Patent

CA 1194151

ABSTRACT. Circuit arrangement comprising a differential amplifier. A circuit arrangement comprising a differential amplifier, which supplies a balanced alternating voltage having a d.c. component which is filtered by means of a low-pass filter and is used for negative feedback. In order to economize a second filter capacitor, the voltages are supplied through a low-pass circuit to a second dif- ferential amplifier, which supplies an unbalanced d.c. control quantity, which is supplied through a further low-pass filter comprising only one capacitor to the first differential amplifier.

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