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JP2012010184A Electromagnetic coil driving circuit and hydraulic elevator device provided with the same 审中-公开
标题翻译：电磁线圈驱动电路及其相应的液压电梯装置
公开(公告)号：JP2012010184A
公开(公告)日：2012-01-12
申请号：JP2010145479
申请日：2010-06-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： JINGU KUNIO , KAJIYAMA TOSHIKI , MIZOBE MANABU , EBISAWA TAKESHI
IPC分类号： H03K17/16 , B66B1/34 , B66B9/04 , H03K17/08
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic coil driving circuit capable of preventing a relay contact point from being deposited without using a relay having a large contact capacity and to provide a hydraulic elevator device provided with the electromagnetic coil driving circuit.SOLUTION: A diode 8 is arranged parallel to a resistance 7 of a CR circuit which is connected in parallel with a relay contact 3. The diode 8 is directed so that an electric current in an electromagnetic coil 1 flows to the diode 8 to charge a capacitor 6 when a contact is opened. Because the electric current in the electromagnetic coil 1 flows to the capacitor 6 through the diode 8, a capacitor having a large capacity can shorten the time for arc generation when the contact is opened. When the contact is closed, charge of the capacitor 6 is discharged as an inrush current through the relay contact 3 and the resistance 7. Thus, high resistance can reduce the inrush current. Therefore, an electromagnetic coil drive circuit can be miniaturized, produced at low cost and have a long service life without adapting a relay with a large contact capacity.
摘要翻译：解决的问题：提供一种电磁线圈驱动电路，其能够防止在不使用具有大接触容量的继电器的情况下沉积继电器触点，并且提供具有电磁线圈驱动电路的液压升降装置。解决方案：二极管8平行于与继电器触点3并联的CR电路的电阻7并排布置。二极管8被引导为使得电磁线圈1中的电流流向二极管8 当触点打开时对电容器6充电。由于电磁线圈1中的电流通过二极管8流向电容器6，所以具有大容量的电容器可以缩短触点断开时的电弧产生时间。当触点闭合时，电容器6的充电通过继电器触点3和电阻7作为浪涌电流放电。因此，高电阻可以降低浪涌电流。因此，电磁线圈驱动电路可以小型化，低成本地生产并且具有长的使用寿命而不适应具有大接触容量的继电器。版权所有（C）2012，JPO＆INPIT

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