Isolated controller circuit

Details Isolated controller circuit Isolated controller circuit

1986-11-24

1987-11-24

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, H02M 3335

Patent

active

047093153

ABSTRACT:
An isolated controller circuit responsive to an input signal voltage from the output of a low-pass filter referenced to an isolated reference potential; the controller circuit being characterized to provide a control signal at a signal output terminal referenced to a non-isolated reference potential. The isolated controller circuit comprises: a reference signal source referenced to the isolated reference potential for providing a reference signal and an amplifier and compensation means for amplifying and compensating the signal difference between the input signal and the reference signal to provide a compensated control signal referenced to the isolated reference potential. The controller circuit also has an oscillator and coupling means for coupling and scaling the compensated control signal referenced to the isolated reference potential and it provides the control signal at the signal output terminal referened to the non-isolated reference potential.

REFERENCES:
patent: 4063307 (1977-12-01), Stephens
patent: 4195333 (1980-03-01), Hedel
patent: 4466051 (1984-08-01), Fitzgerald

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