Patent ID: 8890491
Filing Date: 2014-11-18
Classification: H02J,Y02E

Abstract:
1. A high voltage dc power source for providing a charging current to an electronic device, comprising: one or more strings connected in parallel, each string being subdivided into a plurality of dc power source units connected in series and each string being provided with a plurality of solid-state switches configured to connect and disconnect said string, and a control unit adapted to turn on and turn off the solid state switches, the control unit, upon receiving an order to connect the string, controls the solid state switches of the string to be alternately turned on and off so that a soft charging of the electronic device is achieved, wherein each switch is arranged to connect and disconnect one of the dc power source units of the string and that the control unit is configured to simultaneously control the solid state switches of the string to be alternately turned on and off so that the soft charging of the electronic device is achieved.