Electromagnetic coupling galvanic isolated solid state relay...

Details Electromagnetic coupling galvanic isolated solid state relay... Electromagnetic coupling galvanic isolated solid state relay...

2006-05-19

2009-06-30

Jackson, Stephen W (Department: 2836)

Electric power conversion systems

Current conversion

Using semiconductor-type converter

C363S015000, C363S016000, C363S021030, C361S018000

Reexamination Certificate

active

07554827

ABSTRACT:
A solid state relay is provided herein, which utilizes an electromagnetic coupling device for galvanic isolation and providing feedback from the output side to the system side. The solid state relay contains a system-side driving circuit, an electromagnetic coupling device, and an output-side control circuit. The electromagnetic coupling device contains at least a system-side electromagnetic coupling element, a first output-side electromagnetic coupling element, and a second output-side electromagnetic coupling element. The system-side driving circuit is connected to the system-side electromagnetic coupling element, and takes the ON/OFF digital control signals from a digital system as input to turn on and off its driving to the system-side electromagnetic coupling element. The electromagnetic coupling device converts and transmits the electrical energy from the system side to the output side and thereby provides the working energy to the output control circuit connected to the first output-side electromagnetic coupling element. The second output-side electromagnetic coupling element forms a feedback circuit, through which the electrical status at the output side is fed back to the system side via the electromagnetic coupling device.

REFERENCES:
patent: 2005/0243481 (2005-11-01), Williams et al.
patent: 2007/0046501 (2007-03-01), Wang et al.

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