Device for limiting power supply switch-on current, has additional controlled switching element that directly or indirectly connects load to supply device and is driven via timing element

摘要

The device has at least one limiting resistance (24) connected in series with a part of the power supply (18) that has a low impedance at switch-on, a controlled switching element (28) for direct or indirect bridging of the resistance and a controller (34) connected to the switching element. A further controlled switching element (30) provides direct or indirect connection of a load (12) to the supply device and is driven by the controller via a timing element (40). Independent claims are also included for a mains stage with a switch-on current limiter and for a method of limiting a switch-on current.