Abstract: A bus station or a communication system is described, where the bus stations receive communications containing transmission information from which the position of the transmitting bus station in a sequence of bus stations can. A time slot for the bus station in which the bus station repeats the received communication is calculated from the transmission information and position information stored in the bus station indicating the position of the bus station in the sequence. These bus stations are especially suitable for data exchange by radio.

Abstract: The invention relates to a communication system, having at least one mobile communication device which has at least one actuating means for tripping an action of at least one piece of equipment communicating with the communication device. It is provided that within a usage area (10) of the at least one communication device (12), defined regions (16, 18, 20, 22, 24) are assigned position marks (36, 38, 40, 42, 44), which when the communication device (12) enters one of the defined regions (16, 18, 20, 22, 24) of the communication device (12) impart the current position for switching over a function setting of the at least one actuating means (50).

Abstract: The circuit arrangement for connecting a consumer to an alternating voltage source includes a switch actuator (16) connectable in series with the consumer (12) and an electronic circuit (22) associated with the switch actuator and supplied with a direct voltage by means of it. The switch actuator (16) includes a rectifier for supplying the direct voltage to the electronic circuit, a transformer (24) comprising a secondary winding (32) supplying power to the rectifier, a first low inductance primary winding (26) and a second high inductance primary winding (28) and a switching device (36,42) controlled by the electronic circuit (22) to switch between the primary windings. Another switching device (44) is connected in parallel with the first primary winding (26) in order to short-circuit it for a predetermined short-circuit duration as a function of a nominal power consumed by the consumer. The switching device (36,42) can be a relay or a semiconductor component.