Display system for monitoring electrical networks of different voltages, especially of electrical systems in vehicles

摘要

The display system according to the invention for monitoring electrical networks of different voltages, especially of electrical systems in vehicles, has at least one control input (E1) which is formed by a resistor (R2) which is connected in series with the base of a transistor (T1), the emitter of the transistor being connected to the common terminal, and has at least one output which is formed by a light-emitting diode (LD1) which is inserted in the collector circuit of the transistor (T1), a constant voltage which is independent of the magnitude of the operating voltage being ensured for the light-emitting diode/transistor circuit by means of a resistor (R1) and a zener diode (ZD1), and the entire circuit arrangement is accommodated in a housing (1) which has openings (4) for light-emitting diodes (LD1-LD3) on its front side and a standard plug connector (6) for electrical connection on its rear side. <IMAGE>