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1. 发明专利

JP2003051628A Reverse-polarization detecting circuit for piezoelectric transformer 审中-公开
标题翻译：用于压电变压器的反向极化检测电路
公开(公告)号：JP2003051628A
公开(公告)日：2003-02-21
申请号：JP2001236137
申请日：2001-08-03
申请人： Taiheiyo Cement Corp , 太平洋セメント株式会社
发明人： KAMATA SHUNJI , FUJIMURA TAKESHI , TOYAMA MASAAKI
IPC分类号： H01L41/107 , H02M3/24
摘要： PROBLEM TO BE SOLVED: To provide a reversely polarized piezoelectric transformer detecting circuit capable of surely discriminating a reverse polarized piezoelectric transformer, in a short time when inspection for a piezoelectric transformer is carried out.
SOLUTION: The reverse-polarization detecting circuit for detecting the polarization detects the polarization direction in the primary side or the secondary side of the piezoelectric transformer (3), when it is reverse to the desired polarization direction. The detecting circuit is provided with a comparison means (4) for comparing a drive AC voltage (2) for driving the piezoelectric transformer, with a signal which corresponds to the output voltage of the piezoelectric transformer.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供一种反向极化的压电变压器检测电路，能够在执行压电变压器的检查的短时间内确定地区分反极化压电变压器。解决方案：用于检测偏振的反向偏振检测电路当与期望的偏振方向相反时，检测压电变压器（3）的初级侧或次级侧的偏振方向。检测电路设置有用于将用于驱动压电变压器的驱动AC电压（2）与对应于压电变压器的输出电压的信号进行比较的比较装置（4）。

2. 发明专利

JP2002111092A CASING STRUCTURE OF PIEZOELECTRIC TRANSFORMER 失效
公开(公告)号：JP2002111092A
公开(公告)日：2002-04-12
申请号：JP2000296564
申请日：2000-09-28
申请人： TAIHEIYO CEMENT CORP
发明人： KAMATA SHUNJI , FUJIMURA TAKESHI , TOYAMA MASAAKI
IPC分类号： H01L41/107 , H01L23/02
摘要： PROBLEM TO BE SOLVED: To provide the casing structure of a piezoelectric transformer in which uncomfortable sound can be suppressed at the time of ballast light control. SOLUTION: The casing structure of a piezoelectric transformer where a piezoelectric transformer element 2 being driven in half-wavelength mode is arranged as follows. At first, primary electrodes 21a and 21b formed, respectively, on the upper and lower surfaces of the piezoelectric transformer element 2 are extended up to the one end face of the piezoelectric transformer element 2 such that they abut on each other thus forming extended parts 22a and 22b of the primary electrodes 21a and 21b. Subsequently, one ends of lead wires 41a and 41b for ensuring a conductive state between the primary electrodes 21a and 21b, and metal terminals 31a and 31b provided on the side face of the case 1 facing the end face of the piezoelectric transformer element 2, are connected with the metal terminals 31a and 31b. Furthermore, the other ends of lead wires 41a and 41b are connected with the extended parts 22a and 22b of the primary electrodes 21a and 21b.

3. 发明专利

JP2003088137A SCREENING CIRCUIT OF PIEZOELECTRIC TRANSFORMER 审中-公开
公开(公告)号：JP2003088137A
公开(公告)日：2003-03-20
申请号：JP2001277613
申请日：2001-09-13
申请人： TAIHEIYO CEMENT CORP
发明人： KAMATA SHUNJI , FUJIMURA TAKESHI
IPC分类号： H01L41/107 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a screening circuit which can surely remove a piezoelectric transformer of lesser strength at the time of inspecting the piezoelectric transformer and can protect a normal piezoelectric transformer from damage for breakdown. SOLUTION: This screening circuit of piezoelectric transformer can destroy a piezoelectric transformer element having lesser strength. In this screening circuit of piezoelectric transformer, the sweep range of the frequency of the oscillation signal outputted from the oscillation means includes the maximum value of an output voltage of the piezoelectric transformer, and the sweep can be performed continuously to the lower frequency side from the higher frequency side or to the higher frequency side from the lower frequency side.

4. 发明专利

JP2002176207A CASE FOR HOUSING PIEZOELECTRIC TRANSFORMER ELEMENT 失效
公开(公告)号：JP2002176207A
公开(公告)日：2002-06-21
申请号：JP2000369744
申请日：2000-12-05
申请人： TAIHEIYO CEMENT CORP
发明人： KAMATA SHUNJI , FUJIMURA TAKESHI
IPC分类号： H01L41/107 , H01L23/02
摘要： PROBLEM TO BE SOLVED: To provide a case for housing a piezoelectric transformer element, capable of suppressing abnormal noise or undesired noise generated from a piezoelectric transformer element and preventing discontinuity of a lead wire. SOLUTION: In a case 10 (box) for housing a piezoelectric transformer element 30 in which elastic bodies 32a and 32b are mounted at prescribed positions, sharp protruded portions (fixing portions) are formed on the inner surface, and at least one part of the portions 13a and 13b is buried in the body 32b when housing the element 30 in the box 10, thereby holding the element 30.

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