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101. 发明专利

JPH1114684A SPACE CHARGE MEASURING APPARATUS 失效
公开(公告)号：JPH1114684A
公开(公告)日：1999-01-22
申请号：JP21143397
申请日：1997-06-20
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANNO TAKESHI , INOUE YOSHIYUKI
IPC分类号： G01R29/24 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To provide a space charge measuring apparatus which uses a pulse electrostatic stressing method, and is capable of measuring local space charge when a measured sample breaks down dielectrically. SOLUTION: One electrode 4 and the other electrode 5 which interpose an insulator sample 3 in between are provided. To the one electrode 4, a high- voltage pulse generator which applies a pulse voltage is connected, and to the other electrode 5 a piezoelectric element 9 for detecting an elastic wave generated with the application of a pulse voltage is connected. A needle electrode is used for this one electrode 5, and the diameter of curvature of its tip is 10-100 μm, and the magnitude of the piezoelectric element is 1 mm or less.

102. 发明专利

JPH113031A ELECTRIFICATION SENSE 失效
公开(公告)号：JPH113031A
公开(公告)日：1999-01-06
申请号：JP20373997
申请日：1997-06-10
申请人： HIRAYAMA KATSUYA
发明人： HIRAYAMA KATSUYA
IPC分类号： G09B23/18 , G01R29/24
摘要： PROBLEM TO BE SOLVED: To make static electricity visible and photograph it although the static electricity could not be seen with ease before. SOLUTION: Resin 2 is put over resin 1. In this state, electrification is visible, but it is recommended that it is seen on metal where a small universe appears when the metal is rubbed against a foreign body.

103. 发明专利

JPH10312752A METHOD AND APPARATUS FOR MEASURING ELECTRIC POTENTIAL OF NECK INNER WALL OF CATHODE-RAY TUBE 失效
公开(公告)号：JPH10312752A
公开(公告)日：1998-11-24
申请号：JP12388297
申请日：1997-05-14
申请人： SONY CORP
发明人： KOSAKA YOSHIAKI
IPC分类号： G01R29/24 , H01J9/42
摘要： PROBLEM TO BE SOLVED: To easily and surely measure the potential of an inner wall of a neck of a cathode ray tube and properly grasp the alteration of the inner wall electric potential with the elapse of time and potential distribution. SOLUTION: At first, electrodes 4a, 4b for measurement are closely installed in the outer circumferential face of a neck 2 of a CRT 1 and after a capacitive element 6 is inserted between the electrodes 4a, 4b for measurement, prescribed electrodes 3a, 3b in the CRT 1 are discharged. Electric discharge is caused by radiating, for example, coherent electromagnetic waves to prescribed electrodes. At that time, the potential caused in the electrode 4a for measurement is measured and based on a proportional expression having a proportional factor determined by an electrostatic capacity of the neck 2 and the electrostatic capacity of the capacitive element 6, the inner wall potential of the neck 2 is computed.

104. 发明专利

JP2799340B2 失效
公开(公告)号：JP2799340B2
公开(公告)日：1998-09-17
申请号：JP12211592
申请日：1992-05-14
IPC分类号： B65H63/032 , D03D51/34 , G01N33/36 , G01R29/24

105. 发明专利

JP2765380B2 失效
公开(公告)号：JP2765380B2
公开(公告)日：1998-06-11
申请号：JP19313992
申请日：1992-06-25
申请人： NITSUSHIN DENKI KK
发明人： ANDO YASUNORI , KANESHIRO MITSUHIRO
IPC分类号： G01R29/24 , G01T1/29 , H01J37/04 , H01J37/317 , H01L21/265

106. 发明专利

JPH10153578A DETECTING DEVICE FOR NEGATIVE ELECTRIC CHARGE IN THE AIR 失效
公开(公告)号：JPH10153578A
公开(公告)日：1998-06-09
申请号：JP35173696
申请日：1996-11-22
申请人： TOMONAGA KATSUHIDE
发明人： KITAMURA SHIGENOBU
IPC分类号： G01R29/24 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To obtain a device by which the existence of static electricity of negative electric charge in the air is detected as one standard to know the cleanliness of the air inside a room, which is low-cost, and which is small-sized so as to be put into a pocket. SOLUTION: The side of the gate 9 of a field-effect transistor(FET) is connected to metal body (a plate, a rod or a net), for negative-electric-charge sensing, in a required size, the side of the source 8 of the field-effect transistor 10 is connected to a ground via an input resistance 17 and a switching circuit 6, the switching circuit 6 is connected to the anode side of a power supply 12 via a light-emitting diode 2 for negative-electric-charge display and a control resistance 15, the cathode side of the power supply 12 is connected to the ON- side terminal 18 of a switch 5, the switch 5 is in a grounded state when it is set to the OFF side, and the metal body 1 for sensing is connected to its OFF-side terminal 19 via a protective resistance 4 and a protective diode 3.

107. 发明专利

JPH09311122A STANDARD SAMPLE FOR MEASURING SPACE CHARGE, AND METHOD OF MEASURING SPACE CHARGE 失效
公开(公告)号：JPH09311122A
公开(公告)日：1997-12-02
申请号：JP12724796
申请日：1996-05-22
申请人： FUJIKURA LTD
发明人： YOKOYAMA AYAKO , MIYATA HIROYUKI
IPC分类号： G01R29/24 , G01N1/00 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To provide a standard sample capable of regularly providing stable distribution of space charge and accumulated quantity of space charge by providing electrodes formed of a pair of conductors opposite to a body formed of a ceramic sintered body. SOLUTION: Circular thin plate-like electrode parts 3, 3 formed of a pair of conductors are provided on both surfaces of a body 2 formed of ceramic sintered body which constitutes a standard sample 1 so as to be opposed thereto. As the material forming the body 2, a ceramic sintered body dielectric body generally used as ceramic capacitor which is a dielectric body having the performance of almost scattering the space charges accumulated in the body 2 by voltage application by grounding is preferred. For example, a sintered body of titanium oxide is used. As the conductors forming the electrodes 3, 3, aluminum, gold and the like are used. The diameter of the standard sample 1 is set to 100-120mm, and the thickness (t) of the standard sample 1 (body 2) corresponding to the space between the electrode parts 3, 3 is set to 1-3mm. The electrode parts 3, 3 have diameters of 20-40mm and thicknesses (a), (a) of 1.0-3.0mm.

108. 发明专利

JP2682466B2 失效
公开(公告)号：JP2682466B2
公开(公告)日：1997-11-26
申请号：JP22922594
申请日：1994-09-26
IPC分类号： G01R29/12 , G01N27/00 , G01R29/14 , G01R29/24 , G01R31/26 , H01L21/66

109. 发明专利

JPH09138217A MEASURING APPARATUS FOR ELECTRIFICATION AMOUNT 失效
公开(公告)号：JPH09138217A
公开(公告)日：1997-05-27
申请号：JP31967595
申请日：1995-11-13
申请人： RICOH KK
发明人： IIMURA HARUO
IPC分类号： G01R29/24 , G01N27/60
摘要： PROBLEM TO BE SOLVED: To obtain a measuring apparatus by which the saturation electrification amount and the saturation time of a sheetlike or filmlike sample are measured efficiently without hardly damaging the sample to be measured. SOLUTION: A measuring apparatus is composed of a sample plate 3 in which a sample layer 2 is formed so as to come into contact on a conductive substrate 1, of a sample-plate holding member 4 which holds the sample plate 3, of a roller 5 which is installed so as to come into contact with the sample plate 2, of a sample-plate movement mechanism 6 which moves the sample-plate holding member to a direction perpendicular to the tangent line of the roller 5 to the sample layer 2 and of an electric-charge measuring device 7 which measures the electric charge amount of the sample plate 3. The sample plate 3 is moved back and forth by the sample-plate movement mechanism 6, it is repeatedly brought into contact with, and separated from, the roller 5, and an electric charge which is generated in the sample layer 2 is measured by the electric-charge measuring device 7.

110. 发明专利

JPH0980099A DEVICE FOR DETECTING ELECTRIC CHARGE 失效
公开(公告)号：JPH0980099A
公开(公告)日：1997-03-28
申请号：JP23848495
申请日：1995-09-18
申请人： MATSUSHITA ELECTRONICS CORP
发明人： MASUYAMA MASAYUKI , MATSUDA YUJI
IPC分类号： G01R31/26 , G01R29/24 , G01R31/319 , H01L21/66
摘要： PROBLEM TO BE SOLVED: To improve charge detection sensitivity of a device for detecting electric charge. SOLUTION: A charge detection part 2 made of an N-type impurity layer on a P-type impurity semiconductor substrate 1 accumulates electric charge. Voltage fluctuation of the charge detection part 2 is electrically transmitted to the gate electrode of a drive transistor part 6 and output as charge of source potential VO of the drive transistor part 6. Here, the source potential VO of the drive transistor part 6 is electrically transmitted to the gate electrode of a feedback transistor part 8 disposed between the drain electrode of the drive transistor part 6 and a power source part VOD through a voltage shift part 9. Thus, since the drain potential of the drive transistor part 6 trails displacement of potential (namely, gate potential of drive transistor 6) of the charge detection part 2 by the feedback transistor part 8, the junction capacitance between the gate and the drain of the drive transistor 6 is small, the whole capacitance of the charge detection part 2 is decreased and charge detection sensitivity is improved.

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