Siemens Energy, Inc.

Arkansas Power Electronics International, Inc.

Cree Fayetteville, Inc.

Jie Yang

David J Mitchell

John Fraley

Bryon Western

Roberto Marcelo Schupbach

Cora Schillig

Cora Hitchman

John R Fraley

David J Mitchel

A voltage regulator circuitry () adapted to operate in a high-temperature environment of a turbine engine is provided. The voltage regulator may include a constant current source () including a first semiconductor switch () and a first resistor () connected between a gate terminal (G) and a source terminal (S) of the first semiconductor switch. A second resistor () is connected to the gate terminal of the first semiconductor switch () and to an electrical ground (). The constant current source is coupled to generate a voltage reference across the second resistorA source follower output stagemay include a second semiconductor switch () and a third resistor () connected between the electrical ground and a source terminal of the second semiconductor switch. The generated voltage reference is applied to a gating terminal of the second semiconductor switch ().

Voltage regulator circuitry operable in a high temperature environment of a turbine engine

A circuitry adapted to operate in a high-temperature environment of a turbine engine is provided. A relatively high-gain differential amplifier () may have an input terminal coupled to receive a voltage indicative of a sensed parameter of a component () of the turbine engine. A hybrid load circuitry may be coupled to the differential amplifier. A voltage regulator circuitry () may be coupled to power the differential amplifier. The differential amplifier, the hybrid load circuitry and the voltage regulator circuitry may each be disposed in the high-temperature environment of the turbine engine.

Electronic circuitry for high-temperature environments

A circuitry () adapted to operate in a high-temperature environment of a turbine engine is provided. The circuitry may include a differential amplifier () having an input terminal () coupled to a sensing element to receive a voltage indicative of a sensed parameter. A hybrid load circuitry () may be AC-coupled to the differential amplifier. The hybrid load circuitry may include a resistor-capacitor circuit () arranged to provide a path to an AC signal component with respect to the drain terminal of the switch (e.g.,) of a differential pair of semiconductor switches, which receives the voltage indicative of the sensed parameter.

Hybrid load differential amplifier operable in a high temperature environment of a turbine engine

Chopper circuitry may be adapted to operate in a high-temperature environment of a turbine. A first semiconductor switch () may have a first terminal coupled to receive a first output signal from a first leg () of a differential amplifier (). A second switch () may have a first terminal coupled thru a first resistive element (R) to a second terminal of the first semiconductor switch. The first terminal of the second semiconductor switch may be coupled to receive thru a second resistive element (R) a second output signal from a second leg () of the amplifier. Switches () may be responsive to a switching control signal to respective gate terminals of the switches to supply an output signal, which alternates in correspondence with a frequency of the switching control signal from a first amplitude level to a second amplitude level, which effectively provides a doubling amplification factor.

Chopper circuitry operable in a high temperature environment of a turbine engine

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Fayetteville, AR, United States of America

Jie Yang