Abstract: The present invention is illustrated in a method of power factor control for a power regulation system connected for supplying electric power to a reactive load. The system includes a microcomputer for supplying gating signals to an electronic switching device such as a triac for controlling the conduction phase angle of the triac to control the application of alternating current (AC) electric power to the load. The method comprises monitoring of the waveform of the AC voltage applied to the load and determining for each of the half-cycles of the waveform a timed event when the absolute value of the magnitude of the waveform transitions through a reference magnitude. A peak of the voltage waveform is determined. The process is repeated for the AC current waveform and the corresponding peaks of the current waveform identified.