Ea elektro automatik ea ps 2000 single output programmable dc power supplies ea elektro automatik 39200114 this 100w single output programmable psu 42v 20a from ea elektro automatik has a very compact and practical enclosure design which is closed on the top and bottom and has no external heat sinks making it ideal for educational facilities schools or workshops the set values for output voltage and current the overvoltage protection ovp threshold and the overcurrent protection ocp th