BUS VOLTAGE POWER SUPPLY WITH REDUCED LOSSES

摘要

Bus supply circuit for voltage supply to a digital bus with at least one bus subscriber, wherein the bus supply circuit applies a DC voltage to the bus in the quiescent state, which DC voltage is at least temporarily short-circuited for transmitting a data bit, with a processing means, which is designed to identify the short circuit by monitoring an electrical variable of the bus, wherein the bus supply circuit at least reduces the supply voltage of the bus in the event that the short circuit is identified until the processing means identifies an end of the short circuit.