摘要:
A shield casing, which is configured to surround an electronic component mounted on a circuit board, includes a frame body including an engagement recess and a lid body including a hook unit configured to engage with the engagement recess. The lid body is fitted to the frame body to cover the frame body. The hook unit is elastically deformable in a second direction that is opposite to a first direction in which the lid body is fitted to the frame body as the lid body is fitted to the frame body, and then snaps into mating engagement in the engagement recess.
摘要:
A shield casing, which is configured to surround an electronic component mounted on a circuit board, includes a frame body including an engagement recess and a lid body including a hook unit configured to engage with the engagement recess. The lid body is fitted to the frame body to cover the frame body. The hook unit is elastically deformable in a second direction that is opposite to a first direction in which the lid body is fitted to the frame body as the lid body is fitted to the frame body, and then snaps into mating engagement in the engagement recess.
摘要:
A lead-free piezoelectric ceramic composition includes a first crystal phase of alkali niobate/tantalate type perovskite oxide having piezoelectric properties and a second crystal phase of A—Ti—B—O composite oxide (where the element A is an alkali metal; the element B is at least one of Nb and Ta; and the contents of the element A, the element B and Ti are not zero). Examples of the second crystal phase are those represented by A1−xTi1−xB1+xO5, and x preferably satisfies 0≦x≦0.15.
摘要:
A piezoceramic material according to an embodiment of the present invention has a composition represented by Pbm{Zr1-x-y-zTixSny(Sb1-nNbn)z}O3 where 1.000≦m≦1.075, 0.470≦x
摘要:
The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa2O-bBi2O3-cTiO2-dCrO where a, b, c and d are mole fractions; 0.030≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0≦d≦0.017; and a+b+c+d=1. The piezoelectric ceramic composition preferably has a main crystal phase of bismuth layer-structured ferroelectric, more preferably Na0.5Bi4.5Ti4O15 crystal. The piezoelectric element of the present invention includes a piezoelectric body formed of the piezoelectric ceramic composition and at least a pair of electrodes held in contact with the piezoelectric body.
摘要翻译:本发明提供一种具有高热阻和高压电变形常数的压电陶瓷组合物和使用压电陶瓷组合物的压电元件。 本发明的压电陶瓷组合物含有Na,Bi,Ti,Cr和O,其中Na,Bi,Ti和Cr的氧化物含量在下列组成范围内:aNa2O-bBi2O3-cTiO2-dCrO 其中a,b,c和d是摩尔分数; 0.030≦̸ a≦̸ 0.042; 0.330≦̸ b≦̸ 0.370; 0.580≦̸ c≦̸ 0.620; 0≦̸ d≦̸ 0.017; 和a + b + c + d = 1。 压电陶瓷组合物优选具有铋层结构的铁电体的主晶相,更优选为Na 0.5 B 4 4.5 Ti 4 O 15晶体。 本发明的压电元件包括由压电陶瓷组合物形成的压电体和与压电体保持接触的至少一对电极。
摘要:
A cyclic code is generated by a circuit including a group of logic gates that generate one multiple-bit code segment from another multiple-bit code segment. The logic gates may, for example, receive B initial bits, where B is the degree of the generator polynomial, and generate one complete (2B−1)-bit code cycle, from which a clocked address generator and a barrel shifter select successive C-bit segments for output (C>1). Alternatively, the logic gates may receive a C-bit segment of the code from a register and generate the next C-bit segment, which is then stored in the register in synchronization with a clock signal. Either arrangement outputs C bits of code per clock pulse and therefore does not require a special high-frequency clock signal.
摘要:
In order to provide a battery in which a molded section can be fixed to a battery cell, a battery comprises a battery cell, a circuit board which is attached to the battery cell, an electrode terminal which connects the battery cell and the circuit board electrically, a molded section which adheres the circuit board and the electrode terminal to the battery cell as an entire unit, adhesion strengthened areas which are formed between the electrode terminal and the battery, and electrode terminal inner surface resin sections which are formed in a part of the molded section of the adhesion strengthened area.
摘要:
A first clock and a second clock are provided. The first and second clocks operate at first and second frequencies, respectively. The phase difference between the first clock and the second clock is accumulated to generate a control signal. In response to the control signal, the phase of the second clock is controlled so as to synchronize with the first clock. Preferably, the phase of the second clock is shifted from the normal timing, when the accumulated value reaches a cycle of the first clock.
摘要:
A lead-free piezoelectric ceramic composition mainly includes a first crystal phase (KNN phase) and a second crystal phase (NTK phase). In the first crystal phase (KNN phase), a plurality of crystal grains formed of an alkali niobate/tantalate perovskite oxide having piezoelectric characteristics is bound to each other in a deposited state. The second crystal phase (NTK phase) is formed of a compound containing titanium (Ti) and fills spaces between the crystal grains in the first crystal phase.
摘要:
A scanner is mounted on a printer. A printer lid is pivotally mounted to the printer, and is moveable to open and close. A scanner lid is pivotally mounted to the scanner, and is moveable to open and close. A printer locking member and a scanner locking member are pivotally mounted to the scanner. Opening the scanner lid causes the printer locking member to pivot to lock the scanner to the printer. Opening the printer lid causes the scanner locking member to pivot to lock the scanner lid to the scanner. A scanner having a lid is pivotally mounted on a printer. When the lid is pivoted to open, a stopper may pivot together with the lid and abut the scanner, thereby stopping the lid. The stopper may pivot together with the lid and the scanner and abuts the printer, stopping the lid and the scanner.