APPARATUS FOR PROVIDING INTRISICALLY SECURE POWER SUPPLY AND FOR TRANSMITTING COMMUNICATION SIGNALS

摘要

The device has a voltage source (U) that is connected to a center tap (M1) on a side of a coupling element (K1) that is connected with a pair of signal lines (S). Another center tap (M2) is provided on another side of another coupling element (K2). A tap of a ground potential (GND) provides power supply voltage for operating electronics, where voltage provided from the voltage source and/or tapped power supply meets requirements sufficient for intrinsic safety.