Bias supply, a power supply and a method of using bias supply voltage levels to signal information across an isolation barrier

Patent metadata

Field	Value
Publication number	US-8971074-B2
Application number	US-201213343216-A
Country	US
Kind code	B2
Filing date	Jan 4, 2012
Priority date	Jan 5, 2011
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

A bias supply, a method of communicating data across an isolation barrier and a power supply are provided herein. In one embodiment, the bias supply includes: (1) a bias supply transformer having a primary winding inductively coupled to a secondary winding across an isolation barrier, (2) a controller configured to direct operation of the bias supply and (3) bias voltage manipulating circuitry, coupled to an input of the controller, configured to receive primary data and based thereon alter a secondary bias output voltage of the secondary winding between defined voltage levels by varying a voltage provided to the controller, the controller and the bias voltage manipulating circuitry located on the primary side.

First claim

What is claimed is:

1. A bias supply having a primary side and a secondary side, comprising;
a bias supply transformer having a primary winding inductively coupled to a secondary winding across an isolation barrier;
a controller located on said primary side and configured to direct operation of said bias supply; and
bias voltage manipulating circuitry located on said primary side and coupled to an input of said controller, said bias voltage manipulating circuitry configured to…

Assignees

• Guthrie Stephen C
• Pal Subarna
• Gen Electric

Inventors

• Guthrie Stephen C
• Pal Subarna

Classifications

• H02M2001/0006

  Electricity · mapped topic

• H02M3/33523 Primary

  Electricity · mapped topic

• H02M1/0006

  Electricity · mapped topic