A DC to DC controller for controlling an inrush current from a DC to DC converter to a battery system having an internal isolating switch. The antenna structure includes differential feeding points which are connected to the electronic circuit differential inputsoutputs through capacitors thus eliminating the need for baluns. To ensure the authenticity of the sequence of instructions from the external storage element, the processor supports Multiple Independent Levels of Security or another partitioning scheme. A file includes a sequence of <name, value> pairs. One exemplary clinical system may include a high-energy electron source, an n-stage scanning system, x-ray pixel beam targets, and an x-ray pixel beam array collimator. Based on the results of the comparison of the information with the reader preferences, the system modifies the appearance of the hyperlink.