Patent ID: 9391455
Filing Date: 2016-07-12
CPC Classification: H02J

Claim Text:
1. A system for switching between first and second voltage supply units, the system comprising: an output unit, a first interface unit, a second interface unit; and a controller; wherein the first interface unit is coupled between the first voltage supply unit and the output unit; wherein the second interface unit is coupled between the second voltage supply unit and the output unit; wherein the controller is arranged to select a selected voltage supply unit and to instruct the first and second interface units and the output unit to facilitate a provision of a selected supply voltage provided from the selected voltage supply unit to a load coupled to the output unit; wherein each one of the first and second interface units comprises a positive input port, a negative input port, a positive output port and a negative output port; wherein a negative output port of the first interface unit is isolated from a negative output port of the second interface unit; and wherein a positive output port of the first interface unit is isolated from a positive output port of the second interface unit, and wherein the controller is arranged to prevent the supply the selected supply voltage until the selected supply voltage exceeds a predetermined minimal threshold.