METHOD FOR GENERATION OF MECHANICAL OSCILLATIONS AND GENERATOR FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC H02N2/00 H02N2/14 H02N2/18 H01L41/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used to drive various devices in precision instrumentation, in acoustics and hydroacoustics, in nanotechnology systems, in devices for creation of vibrations. Technical result is improvement of reliability, increase of uninterrupted operation time and electric energy saving. Device with energy recovery for generation of electric oscillations on plates of piezoelectric actuator P has two input and two output terminals for connection with power supply source of DC voltage and piezo actuator P accordingly. Device has a storage capacitor C1 connected in parallel to the power supply, two half-bridges, a throttle connecting the midpoints of the half-bridges and a control device of the switches comprising half-bridges. First half-bridge includes series-connected controlled electronic keys K1 and K2, to each of which diodes D1, D2 are connected in parallel. In the first embodiment, the second half-bridge includes two controlled electronic switches K3 and K4, to each of which diodes D3, D4 are connected in parallel. In the second embodiment, the second half-bridge includes a controlled electronic switch K3 and a diode D4 in series. At the same time diode D3 is connected in parallel to K3 electronic switch. Control device of half-bridge keys is programmed so that to control operation of keys in order to create mechanical oscillations with high energy efficiency, achieved by recuperation of energy released during discharge of piezoactuator, and preservation of said energy for subsequent charge of piezoactuator.

EFFECT: created circuits make it possible to generate "shelves" of output voltage of arbitrary duration with voltage higher than supply voltage.

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