Increased-efficiency single-phase direct boost A.C.- A.C. converter

A.C.-A.C. converters are currently used in A.C. motor speed control, adjustable switching A.C. sources, A.C. voltage waveform restorers, electric heating, lighting control etc. In many applications, they replaced alternative voltage regulators that use thyristors or triacs due to their benefits: they are smaller, more efficient and the waveforms of the voltage, load current and input current are much better.