HYBRID LOAD DIFFERENTIAL AMPLIFIER OPERABLE IN A HIGH TEMPERATURE ENVIRONMENT OF A TURBINE ENGINE

摘要

A circuit (120) adapted to operate in a high temperature environment of a turbine engine is provided. The circuit may include a differential amplifier (122) having an input terminal (124) coupled to the sensing element for receiving the voltage indicative of the sensed parameter. The hybrid load circuit 125 may be AC coupled to the differential amplifier. The hybrid load circuit is arranged to provide a path to the AC signal component for the drain terminal of the switch (e.g., 128) of the differential pair of semiconductor switches 126, 128 receiving the voltage representative of the sensed parameter, And a capacitor circuit 134.