Flexible power concept for laboratory & system applications. The high level of flexibility of the current, voltage & power output parameters extends the application area of this new generation of power supplies the EA-PS 9000 series to an unparalleled extent. Where previously a specific device type with a square voltage/current envelope had to be obtained for each application, now a flexible power concept is employed. An RPM-regulated fan ensures a low-noise operation. The ZH-equipment is equipped with a two-quadrant module for the fast & defined unloading of the output voltage (source lowering principle) according to DIN 40839, in order to be able to use the equipment in auto-electronics inspection stations. Thus auto elektronic tests can be accomplished by simulation of the engine characteristic or the auto Hi Fi test