Abstract: Apparatus is disclosed herein which is capable of administering DIAPULSE® treatments, and also capable of applying electromagnetic energy to a treatment area for modified DIAPULSE treatments and for new applications, both thermal and non-thermal, including research. The apparatus provides: more precise control of treatment parameters, including burst repetition rate, power level, and treatment duration, using a minimal number of hardware components; dynamic adjustment of power radiated to a treatment area to a selected power level; the capability of varying treatment parameters in software beyond the variations possible in the earlier DIAPULSE® apparatus; the automatic creation and updating of a patient file which logs treatment parameters and other information, and the ability to access, upload and down load the patient file and information therein; and the reduction of power consumption and power dissipation by and in the improved apparatus.