Abstract: The invention relates to a method for checking at least one field effect transistor (11) connected as an active diode, which is connected downstream of an output of a power supply unit (1) within a power supply device.

Abstract: A switched-mode power supply system and method for converting an input voltage into an output voltage, including at least one switching stage controlled by a pulse-width modulation circuit in a clocked manner, and a control circuit that influences a pulse-width modulation circuit to vary the level of the output voltage, characterized by the provision of a current limiting circuit which, after a threshold voltage has been exceeded, limits the power supply output current first to an elevated maximum current for a first period of time, and thereafter to a regular maximum current. The control circuit is such that the first period of time for which the output current is limited to the elevated maximum current is dependent on the level of the output current.

Abstract: The invention relates to a power supply device for converting an input voltage (UE) into an output voltage (UA), comprising at least one switching stage (4) controlled by a pulse-width modulation circuit (9) in a clocked manner, wherein a control circuit (8) is provided, which influences the pulse-width modulation circuit (9) so as to change the level of the output voltage (UA), wherein a current limiting circuit is provided which, after a threshold has been exceeded, limits an output current (IA) of the power supply device first to an elevated maximum current (I?max) for a period of time and thereafter to a regular maximum current (Imax). According to the invention, the control circuit (8) is configured such that the period of time for which the output current (IA) is limited to the elevated maximum current (I?max) is dependent on the level of the output current (IA). The invention further relates to a method for limiting the output current (IA) of a power supply device.

Abstract: An electrical distribution system includes a plurality of separate consumer modules for supplying power to a plurality of consumer loads, respectively. Each of the consumer modules includes an overload fault detection device for automatically interrupting the supply of power to a given consumer load upon the detection of a fault therein by an overload protection arrangement. When the voltage drop across a measuring resistor exceeds a given threshold value, a non-conducting transistor becomes conductive, thereby opening a gate circuit to disconnect the consumer load from its power supply. Resistors of varying resistance values may be selected manually or by remote control to correspond with the demand requirements of the consumer loads.

Abstract: An electrical distribution system includes a plurality of separate consumer modules for supplying power to a plurality of consumer loads, respectively. Each of the consumer modules includes an overload fault detection device for automatically interrupting the supply of power to a given consumer load upon the detection of a fault therein by an overload protection arrangement. When the voltage drop across a measuring resistor exceeds a given threshold value, a non-conducting transistor becomes conductive, thereby opening a gate circuit to disconnect the consumer load from its power supply. Resistors of varying resistance values may be selected manually or by remote control to correspond with the demand requirements of the consumer loads.