VWP; A New Approach to Small, Light, Efficient, High Power Regulated Power Supplies

A regulated power supply has been developed, employing no mains power transformer, with very low power dissipating control elements, and resulting high efficiency. The size and weight are substantially less than those of conventional designs for comparable power ratings. The mains power is converted directly into dc, and silicon controlled rectifiers are utilized to generate high frequency variable width pulses (VWP) of voltage, for output control, and for line and load regulation. Pulse width modulation is used to reduce line frequency ripple. The system is advantageous for load power ratings above 2 kw.