Ea elektro automatik 150 300w dual output variable dc power supplies ea elektro automatik 35 320 150 this 300w dual output variable dc power supply from ea elektro automatik is a universal device which offers the ideal solution for schools laboratories and workshops courtesy of the adjustable voltage and current outputs which can be tapped in parallel via a rectifier and a filter that can be switched off the values of the adjustable outputs are displayed via large 3 digit led voltmeters an