FREQUENCY DOUBLER Russian patent published in 2006 - IPC H02M5/16 

FIELD: electric engineering, in particular, engineering of frequency transformers, in particular, engineering of transformer type multipliers, for example, doublers, possible use for powering high speed drives of wood-processing industry, reducer-less centrifuges, for induction heating of large metallic blocks and the like.

SUBSTANCE: frequency doubler contains transformer, on each rod of which four primary windings are positioned, combined in two pairs. Each pair of primary windings is closed on pair of synchronously enabled transistors, working in such a wag, that starting portion of powering voltage sinusoid is utilized. Common connection points of transistors of first and second pairs and windings of second pair are connected in accordance to direct series of phases alternation to input phase clamps. Common connection point of windings of first pair is connected to zero input clamp.

EFFECT: improved power coefficient due to use of starting portion of sinusoid of powering voltage in process of generation of EMF of doubled frequency in windings of transformer.

2 dwg