Symmetrical frequency multiplier circuits

In recent times there has been considerable renewed interest in the use of static magnetic cores to produce power at a multiple of the frequency of a power source. Generally in these circuits, nonlinear magnetic reactors are connected in a symmetrical multiphase fashion, using the cores to produce harmonics and using symmetrical interphase connections to isolate desired groups of harmonics without the use of filters. In previous studies1,2,3 several circuits of this type have been evaluated showing their characteristics when used either as a power supply or as a combined converter and power amplifier.