Emergency power supply e.g. for electronic equipment, such as computer, has parallel connected AC and DC current sources

摘要

An emergency power supply system has at least one DC/DC current source (40), which is electrically joined to a DC source (20), at least one AC/DC current source (30) which is electrically joined to an AC current source (10) and a current control or current regulation device (50) which comprises components, each connected to the AC/DC current source (30) and the DC/DC current source (40), in which the current control or regulating device (50) is designed to combine together a DC current both from the AC/DC current source (30) and from the DC/DC current source, before this is made ready for an electronic appliance (60).