Switching Mode Power Supplies.

The subject of switching mode power supplies was examined. A comparison between linear regulators and switchng mode power supplies was made to show the options available for the various types of convertors. Two switching mode power supplies were constructed and tested. The operating efficiency of both systems was found to be more than eighty percent over the specified input voltage and load current conditions. The switching mode power supply circuits required additional components in the design due to the complex pulse width regulation, pulse amplification, and self start circuit required for the system operation. The switching mode power supply is an inherent source of radio frequency interference, thus the complexity of the problem was examined with several methods presented that minimized the RFI of the system. Author