DEVICE FOR EXCITATION OF PIEZOELECTRIC CELLS OF ELECTRO-ACOUSTIC CONVERTERS Russian patent published in 2018 - IPC B06B1/06 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electronics and can be used to excite piezoelectric elements of electro-acoustic transducers, for example, in sound notification devices, etc. Technical result is achieved by the fact that the device for exciting the piezoelectric cells comprises an oscillating circuit with inductance and capacitance connected in parallel with the piezoelectric cell and inductance, the middle branch of which is connected to the power supply of a two-stroke power amplifier of an electric oscillation generator, the points of connection of the capacitance with the inductance and the piezoelectric element of the electroacoustic transducer through diodes are connected to the output electrodes of power elements, transistors, thyristors and their analogs of a two-stroke power amplifier of the electric oscillation generator.

EFFECT: technical result consists in reduced losses of the alternating current coming from the oscillating circuit to the piezoelectric cell of the electroacoustic transducer, increased efficiency of the device, expanded bandwidth of the oscillatory circuit, simplified adjustment and increased reliability of the device during operation.

1 cl, 1 dwg