| 摘要 |
The invention relates to a method for providing the power supply for a bus (3, 4) of building system engineering which provides the power for the electrical system of subscriber stations and transmits data pulses, especially for the EIBA bus. An equalizer pulse is produced for every data impulse to increase the transmission capacity. According to the inventive method, an equalizer current is generated from a basic current (of 5) in order to produce an equalizer pulse. Said basic current is designed to provide the medium power requirement of a subscriber station and of a user electronic system (2) which can be connected thereto. Said basic current (of 5) is supplied to said user electronic system to the extent required and by-passes the user electronic system in the direction of a reference potential if there is only a partial requirement. If the user electronic system (2) exceeds the basic current, the power is supplied by an additional current (of 15). Said additional current, in an initial phase, is smaller than the maximally admissible current during the initial phase minus the basic current so as to avoid an increased power drain caused by the user electronic system (2). The additional current is increased after the initial phase up to a maximally admissible current in an operational phase following the initial phase. |
