Patent ID: 7187563

Claim:
A data communications device, comprising: a first power source; a second power source; a set of line cards configured to perform data communications operations; and a converter connected to the first power source, the second power source and the set of line cards, the converter having: a first oscillator circuit connected to the first power source, a second oscillator circuit connected to the second power source, the first and second oscillator circuits being electrically isolated from each other, an isolation transformer which includes a first primary winding connected to the first oscillator circuit, a second primary winding connected to the second oscillator circuit, and a secondary winding coupled to the first and second primary windings by magnetic inductance, and a rectifier circuit connected to the second winding and to the set of line cards; wherein the first and second primary windings are electrically isolated from each other within the isolation transformer, and wherein the secondary winding is electrically isolated from each of the first and second primary windings within the isolation transformer.