摘要:
A laminated piezoelectric transducer includes a laminated structure of a plurality of ceramic layers and a plurality of internal electrodes, and a plurality of external electrodes provided on the surface of the laminated structure and connected electrically with the internal electrodes. The internal electrode of the laminated piezoelectric transformer includes a plurality of first internal electrodes located in the middle of the length of the laminated structure and a plurality of second internal electrodes located at the ends of the structure. The laminated piezoelectric transducer can increase voltage with high energy conversion efficiency since the polarization volume on its secondary side is increased.
摘要:
A thin film piezoelectric transducer comprises a first electrode layer (24), piezoelectric film layer (25), second electrode layer (26), and third electrode layer (27) formed on a supporting base (22) wherein a cavity (21) is formed. The second electrode layer (26) and the third electrode layer (27) are formed in a pair with a space therebetween on the piezoelectric film layer (25) located above said cavity (21).
摘要:
A thin film piezoelectric transducer comprises a first electrode layer (24), piezoelectric film layer (25), second electrode layer (26), and third electrode layer (27) formed on a supporting base (22) wherein a cavity (21) is formed. The second electrode layer (26) and the third electrode layer (27) are formed in a pair with a space therebetween on the piezoelectric film layer (25) located above said cavity (21).
摘要:
A piezoelectric electronic component suitably used in a cellular phone or the like and capable of achieving reductions in size and profile is provided. A piezoelectric element 3 oscillating in response to application of an input signal and outputting an output signal corresponding to the oscillations is provided on a substrate 1. The piezoelectric element 3 includes a pad 3c 1 and the like, the pad 3c 1 inputting and outputting the input and output signals. A shell member 5 serving as a sealing member constituted of an insulation film covering the piezoelectric element 3 is provided on the substrate 1, the shell member 5 being remote from the piezoelectric element 3. The shell member 5 includes a through hole 5a above the pad 3c 1 or the like, and the through hole 5a is occluded with an electrode 17.
摘要:
Of a plurality of surfaces forming its shape, a piezoelectric transformer (13A) has two types of output electrodes (22) and (23) on one surface in the longitudinal direction and two opposing surfaces in the lateral direction. This piezoelectric transformer (13A) can be driven by properly switching first and second resonance modes different from each other. In a strobe apparatus, a discharge capacitor (3) is charged by a voltage generated in the output voltage (23) when the piezoelectric transformer (13A) is driven in the first resonance mode, and a discharge tube (4) is triggered by a voltage generated in the output electrode (22) when the piezoelectric transformer (13A) is driven in the second resonance mode.
摘要:
The invention relates to a piezoelectric transformer comprising at least two ceramic elements and a copper-based electrode which is arranged therebetween. The inventive ceramic elements are made of a compound containing Pb (Zrx Ti 1-x) O3 + y Pb (Mn1/3 Nb2/3 ) O3.
摘要:
Of a plurality of surfaces forming its shape, a piezoelectric transformer (13A) has two types of output electrodes (22) and (23) on one surface in the longitudinal direction and two opposing surfaces in the lateral direction. This piezoelectric transformer (13A) can be driven by properly switching first and second resonance modes different from each other. In a strobe apparatus, a discharge capacitor (3) is charged by a voltage generated in the output voltage (23) when the piezoelectric transformer (13A) is driven in the first resonance mode, and a discharge tube (4) is triggered by a voltage generated in the output electrode (22) when the piezoelectric transformer (13A) is driven in the second resonance mode.
摘要:
A piezoelectric transformer comprising a rectangular piezoelectric body (23) divided into first to fourth regions (A1 to A4) in the longitudinal direction, planar electrodes (24, 25, 26, and 27) provided in the first and fourth regions (A1 and A4) as input electrodes, and belt-like electrodes (30 and 31) provided at the boundary between the other two regions (A2 and A3) as output electrodes and polarized oppositely in the longitudinal direction. By applying an AC input voltage of the frequency corresponding to the wavelength equal to the length of the piezoelectric body (23) to the input electrodes, the piezoelectric body (23) is vibrated in a one-wavelength resonance mode and the voltage generated by the piezoelectric effect resulting from the vibration is taken out of the output electrodes. This transformer has a small size, generates little vibration speed heat, and is efficient. In a modification of the transformer, the input electrodes can be installed, not in the first and fourth regions, but in the other two regions in which the displacement distributions are symmetrical or opposite in the one-wavelength resonance mode, and the output electrodes are installed in the other regions. In another modification, the first and second areas serve as the input section and are formed separately from the output section of the third and fourth regions and the input and output sections are stuck to each other.