公开(公告)号：EP3026807A4

公开(公告)日：2016-07-27

申请号：EP13889872

申请日：2013-07-23

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H03K17/08 ,  H01J49/02 ,  H02M1/00

CPC分类号： H01J49/022 ,  H01J49/0095 ,  H02M1/32 ,  H02M3/28 ,  H02M7/06 ,  H02M7/10 ,  H02M2001/0077

摘要： An excessive overshoot preventing unit (16) is connected to a loop in which a command voltage Vf according to a difference between: a voltage obtained by dividing an output voltage Vout as a high voltage; and a control voltage Vcont set from the outside is obtained and fed back to each of drive circuits (3 and 5) of a positive voltage generating unit (2) and a negative voltage generating unit (4). The excessive overshoot preventing unit (16) clamps the command voltage Vf at a voltage value according to the control voltage Vcont. An overshoot that occurs in the voltage generating unit (2 or 4) at the time of polarity switching mainly depends on a circuit constant, and hence the amount of overshoot is excessive in the case of a low-voltage output even if the amount of overshoot is optimal in the case of a rated output. To deal with this, in this power unit, the overshoot of the command voltage Vf is suppressed by the excessive overshoot preventing unit (16), and hence the output voltage can be promptly settled to a target voltage even in the case of a low-voltage output.

公开(公告)号：EP3211781A4

公开(公告)日：2017-11-22

申请号：EP14904426

申请日：2014-10-20

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H02M7/10

CPC分类号： H01J49/10 ,  H01J3/40 ,  H01J49/0036 ,  H01J49/0095 ,  H01J49/022 ,  H01J49/063 ,  H01J49/165 ,  H01J49/4245 ,  H02M7/10 ,  H02M7/103

摘要： A high-voltage power source for applying high voltage to a nozzle of an ESI ion source includes a charge release assistant section (26) including switch circuits (62 and 65) and other elements for forcing electric charges accumulated at output terminals to be discharged in a polarity-switching operation, whereby the positive/negative switching of the polarity of the output voltage can be quickly performed. In the mass spectrometer according to the present invention, for example, when the voltage applied to the nozzle needs to be changed from V 1 to V 2 (where V 1 and V 2 are positive, and V 1 >V 2 ), a voltage control section (20) under the command of a main controller (9) operates a positive voltage generation section (21) and negative voltage generation section (23) so as to temporarily provide a negative output voltage. After a predetermined period of time, the voltage control section operates the positive voltage generation section (21) and negative voltage generation section (23) so as to provide voltage V 2 . If the voltage was simply changed from V 1 to V 2 , the voltage would decrease slowly and require considerable time for the change. The positive/negative switching of the polarity induces the discharging of the electric charges accumulated at the output terminals, and consequently, the voltage-switching operation from V 1 to V 2 is quickly performed.

公开(公告)号：EP1931020A4

公开(公告)日：2012-08-08

申请号：EP05782299

申请日：2005-09-08

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H02M3/28 ,  H01J49/02 ,  H02M7/10

CPC分类号： H02M7/103 ,  H01J49/022 ,  H02M7/10 ,  Y10T307/685

公开(公告)号：EP3118887A4

公开(公告)日：2017-04-26

申请号：EP14887871

申请日：2014-03-31

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO ,  NAKANO SHIGENOBU

IPC分类号： H01J49/42 ,  H01J49/00 ,  H01J49/06 ,  H01J49/40

CPC分类号： H01J49/421 ,  H01J49/0027 ,  H01J49/0031 ,  H01J49/40

摘要： The present invention is a mass spectrometer (1) for sequentially performing a measurement for a plurality of target ions, characterized by a storage section (41) for holding ion time-of-flight information concerning the time required for each of target ions to fly through each of the sections constituting the mass spectrometer, and a voltage controller (42) for changing, based on the ion time-of-flight information, the voltage applied to each of those sections to a voltage suited for each target ion, with a time lag corresponding to the difference in the timing of the arrival of the target ion at the section concerned.

摘要翻译： 本发明是一种对多个目标离子依次进行测定的质量分析装置（1），其特征在于，具备：保持部（41），其保持与各目标离子飞翔所需时间有关的离子飞行时间信息 通过构成质量分析装置的各部分，以及电压控制部（42），根据离子飞行时间信息，将施加于各部分的电压变更为适合于各目标离子的电压， 时间延迟对应于目标离子到达有关部分的时间差异。

公开(公告)号：EP2557590A4

公开(公告)日：2015-03-25

申请号：EP11765301

申请日：2011-03-03

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H01J49/42 ,  H01J49/02

CPC分类号： H01J49/28 ,  H01J49/022 ,  H01J49/4215

摘要： Provided is a quadrupole mass spectrometer including direct-current voltage sources (62, 63) having response characteristics which ensure that the response time of the direct-current voltage will be shorter than the period of time required for an ion having the highest mass-to-charge ratio (m/z) among the ions introduced into a quadruple mass filter (2) to pass through this filter (2). Main rod electrodes (31-34) and pre-rod electrodes (41-44) are connected to each other via primary differentiation circuits (65, 66). Thus, in the transient state of the voltage change due to the switching of the mass-to-charge ratio, among the ions entering the quadrupole mass filter (2), ions having low m/z values can be removed by a pre-electrode unit (4), and ions having high m/z values can be removed by a main electrode unit (3). Accordingly, a large amount of ions can be prevented from passing through the filter (2) and entering an ion detector (5).

公开(公告)号：EP2913914A4

公开(公告)日：2016-05-11

申请号：EP12887817

申请日：2012-11-05

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H02M7/10 ,  H01J49/02 ,  H02M1/00 ,  H02M3/07 ,  H02M3/28 ,  H02M3/335

CPC分类号： H01J49/022 ,  H01J49/165 ,  H01J49/36 ,  H02M3/073 ,  H02M3/33507 ,  H02M7/103 ,  H02M2001/0077 ,  H02M2003/071

摘要： An output terminal (P2) of a positive voltage generating circuit (2) and an output terminal (Q1) of a negative voltage generating circuit (4) are connected in series, and an output terminal (Q2) of the negative voltage generating circuit (4) is connected to a ground via a resistor (9). A switching circuit (62, 65) and a series connection circuit of resistors (60, 61, 63, 64) are connected in parallel to each other between the output terminals (P1, P2, Q1, Q2) of the positive voltage generating circuit (2) and the negative voltage generating circuit (4). The switching circuit (65) is on-off driven by a voltage signal taken from a junction point between the resistors (60, 61), and the switching circuit (62) is on-off driven by a voltage signal taken from a junction point between the resistors (63, 64). Accordingly, when the polarity of an output voltage is switched, electric charges accumulated up to that point are discharged through the switching circuit (62, 65) of a voltage OFF-side polarity, so that the voltage quickly falls. As a result, the speed of switching the polarity of the voltage is further increased than before.

公开(公告)号：EP2674963A4

公开(公告)日：2015-11-25

申请号：EP11858336

申请日：2011-02-10

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO

IPC分类号： H01J49/42 ,  G01N27/62 ,  H01J49/02

CPC分类号： H01J49/4215 ,  H01J49/022 ,  H01J49/421

公开(公告)号：EP2602809A4

公开(公告)日：2015-07-08

申请号：EP10855638

申请日：2010-08-06

申请人： SHIMADZU CORP

发明人： MIZUTANI SHIRO ,  SUGAWARA HIROSHI

IPC分类号： H01J49/42 ,  G01N27/62

CPC分类号： H01J49/02 ,  H01J49/4215

摘要： As a control parameter given to a direct-current (DC) voltage generator (53) which generates a DC voltage for ion selection, a "mass-related offset" for allowing an adjustment of the offset for each mass-to-charge ratio is provided in addition to the "gain" and "common offset" which respectively determine the gradient and position of a scan line drawn on a stability diagram during a mass-scan operation. In an automatic adjustment operation using a standard sample, under the control of an automatic regulator (61), the "gain" and "common offset" are initially set, after which the "mass-related offset" for each mass-resolving power is determined so that the mass-resolving power will be substantially uniform, and these data are stored in a control data memory (52). In an analysis of a sample of interest, a quadrupole voltage controller (51) controls the DC voltage generator (53) and a radio-frequency (RF) voltage generator (54) according to the control parameters read from the memory (52). Even when the RF voltage V is non-linear due to the non-linearity of a wave-detector (56), the mass-resolving power can be made to be substantially uniform by varying the DC voltage U in the form of a polygonal line that resembles that non-linearity.