A DC-TO-DC CONVERTER WITH CONSTANT OUTPUT VOLTAGE.

A simple dc-to-dc inverter circuit was developed which provides a constant average dc voltage output for wide ranges of input voltage. This circuit was designed to demonstrate the basic principles involved, and no attempt was made to maximize the efficiency, which undoubtedly could be improved considerably. The basic requirements that must be incorporated in this circuit are a each half-cycle must be triggered at a constant frequency, b the time duration of each half-cycle must be less than the time between successive triggering half-cycles, c the power transistors must be cut off when the power core saturates, and d turn-off of one half-cycle must not spontaneously initiate the succeeding half-cycle. An inverter circuit operating on these principles would provide a relatively simple method of providing a dc-to-dc converter having a constant voltage output, regardless of variations in input voltage or load, over relatively large ranges. Since it is based on switching techniques, its efficiency is high over its full operating range. Author