In an embodiment a process for producing ozone includes applying an input voltage to an input area of a piezoelectric transformer so that a high voltage is generated in an output area of the piezoelectric transformer, wherein the piezoelectric transformer is operated in a pulsed manner such that phases in which the input voltage is applied to the piezoelectric transformer and phases in which the input voltage is not applied to the piezoelectric transformer alternate at regular intervals and surrounding the piezoelectric transformer with an oxygenic process gas so that the ozone is formed from the process gas by the high voltage generated in the output area.

In an embodiment a process for producing ozone includes applying an input voltage to an input area of a piezoelectric transformer so that a high voltage is generated in an output area of the piezoelectric transformer, wherein the piezoelectric transformer is operated in a pulsed manner such that phases in which the input voltage is applied to the piezoelectric transformer and phases in which the input voltage is not applied to the piezoelectric transformer alternate at regular intervals and surrounding the piezoelectric transformer with an oxygenic process gas so that the ozone is formed from the process gas by the high voltage generated in the output area.

A piezoelectric assembly includes at least two piezoelectric components, a positive circuit board, and a negative circuit board. Each piezoelectric component includes a main body portion and a connecting portion. Respective first surfaces of the main body portion and the connecting portion are a positive electrode, and respective second surfaces of the main body portion and the connecting portion are a negative electrode. Main body portions of the at least two piezoelectric components are stacked, connecting portions of the at least two piezoelectric components are distributed in a staggered manner along a set edge. The positive circuit board is coupled to the first surface of the connecting portion, and the negative circuit board is coupled to the second surface of the connecting portion.

A vibrator, a manufacturing method thereof, a haptical sensation reproduction apparatus and a vibration waveform detection method, and relates to the technical field of display. The vibrator comprises a substrate, and a piezoelectric component and a light-emitting component located on the substrate, wherein the piezoelectric component comprises an inverse piezoelectric unit, the light-emitting component comprises a direct piezoelectric unit and a light-emitting unit, and the inverse piezoelectric unit is in contact and connected with the direct piezoelectric unit. The vibrator of this solution may be disposed in a touch-control reproduction screen, the inverse piezoelectric unit in the vibrator is driven to deform to generate vibrations, and the direct piezoelectric unit in contact and connection therewith is driven to deform to generate a current to drive the light-emitting unit to emit light.

A composition includes at least one Pb/Ni/Nb - Pb/Mg/W - Pb/Zr/Ti mixed oxide. A piezoelectric device may be made by providing at least two layers comprising the composition and coated with an outer electrode material; providing a plurality of layers comprising the composition and coated with an inner electrode material; combining or stacking a plurality of layers coated with inner electrode materials between two outer electrodes; and sintering or co-firing the inner electrode materials and outer electrode materials at a temperature at or below about 1000° C.

A composition includes at least one Pb/Ni/Nb - Pb/Mg/W - Pb/Zr/Ti mixed oxide. A piezoelectric device may be made by providing at least two layers comprising the composition and coated with an outer electrode material; providing a plurality of layers comprising the composition and coated with an inner electrode material; combining or stacking a plurality of layers coated with inner electrode materials between two outer electrodes; and sintering or co-firing the inner electrode materials and outer electrode materials at a temperature at or below about 1000° C.

A brushless electric motor is disclosed. A group of permanent magnets are physically attached to a group of piezoelectric actuators which push them toward or pull them away from a second group of permanent magnets when the piezoelectric actuators are electrically activated. The second group of permanent magnets may also be pushed and pulled with a second group of piezoelectric actuators. Alternate configurations using electromagnets are also disclosed. A novel configuration for the groups of electromagnets which maximizes efficiency in a piezoelectrically actuated motor is also disclosed.

A brushless electric motor is disclosed. A group of permanent magnets are physically attached to a group of piezoelectric actuators which push them toward or pull them away from a second group of permanent magnets when the piezoelectric actuators are electrically activated. The second group of permanent magnets may also be pushed and pulled with a second group of piezoelectric actuators. Alternate configurations using electromagnets are also disclosed. A novel configuration for the groups of electromagnets which maximizes efficiency in a piezoelectrically actuated motor is also disclosed.

The present disclosure relates to circuitry for driving a piezoelectric transducer. The circuitry may be implemented as an integrated circuit and comprises driver circuitry configured to supply a drive signal to the piezoelectric transducer to cause the transducer to generate an output signal and active inductor circuitry configured to be coupled with the piezoelectric transducer. The active inductor circuitry may be tuneable to adjust a frequency characteristic of the output signal.

The present disclosure relates to circuitry for driving a piezoelectric transducer. The circuitry may be implemented as an integrated circuit and comprises driver circuitry configured to supply a drive signal to the piezoelectric transducer to cause the transducer to generate an output signal and active inductor circuitry configured to be coupled with the piezoelectric transducer. The active inductor circuitry may be tuneable to adjust a frequency characteristic of the output signal.