FIELD: electricity.
SUBSTANCE: application in the field of electrical engineering. Voltage supply device for a bus in the bus network, first in a bus of EIB-network, with source current (M1) which is coupled in parallel with a capacitor (C3) from which supply voltage (U) is tapped off, at that in-series connection (M1, C3) is connected directly or indirectly to the bus with bus lines (Bus+, Bus-) under different potentials and is differentiated by the first regulating module (A), which stabilises the operating point of the current source (M1) notwithstanding signals at the bus lines (Bus+, Bus-) and loads or load changes in supply voltage (U), and by the second regulating module (B),which adapts the operating point of the current source (M1) by means of actuation at the signal from the bus lines (Bus+, Bus-).
EFFECT: improving reliability.
6 cl, 7 dwg
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