CIRCUIT ARRANGEMENT WITH TWO POLARS OPPOSITELY OPPOSITABLE TO A CONSUMER.

摘要

1. Circuit arrangement having two feed circuits (4, 5) which can be connected to a load (1) with mutually opposite polarization, and having a pair of connections (11, 12), which are in each case connected to the feed circuits (4, 5) via feed current paths, for a load resistance (1), and having a device for optionally feeding the load resistance (1) by means of one or the other feed circuit (4, 5), characterized in that, at least at one of the feed circuits (4, 5), switching means (31, 32), provided for activation, are arranged outside its output circuit, in that, at least at one feed circuit (4, 5), which can be activated by means of switching means (31, 32) outside the output circuit, a transistor (61) is arranged in one of the feed current paths between the feed circuit (4, 5) and the pair of connections (11, 12) for a load resistance (1), and in that the control electrode of the transistor is connected to such a control potential that the transistor is conducting with can activated associated feed circuit and is cut off with a deactivated associated feed circuit.