SIGNALING OUTPUT STAGE FOR GENERATING DIGITAL VOLTAGE SIGNALS ON A BUS SYSTEM

摘要

According to the inventive signaling output stage, the modules are arranged between two lines, and an upper switching means is provided between a first voltage potential and the first line. A middle switching means is provided between the first and second line, and a lower switching means is provided between a second voltage potential which is lower than the first voltage potential. By using said signaling output stage, it is possible to control the modules together over both lines and over each one of the lines when a permanent disturbance potential is applied on the other line. The signal transmission results then as a potential difference between the permanent disturbance potential of the short-circuited line and the undisturbed line whose potential is correspondingly controlled. The invention also relates to the use of said signaling step especially for signaling in bus systems for occupant protection systems in motor vehicles.