公开(公告)号：US06850139B1

公开(公告)日：2005-02-01

申请号：US09936087

申请日：2000-03-03

申请人： Fritz Dettmann ,  Uwe Loreit ,  Carsten Möller ,  Torsten Schönbach

发明人： Fritz Dettmann ,  Uwe Loreit ,  Carsten Möller ,  Torsten Schönbach

IPC分类号： G01D5/245 ,  H01F13/00

CPC分类号： H01F13/003

摘要： The invention relates to a system for pulse magnetizing high-precision magnetic scales. The system comprises a shaped current conductor (1) and a pulse current source (2) that is composed of a capacitor bank (3), a transfer switch (4) and a control unit (5). The compact set-up of the system is the prerequisite for a power circuit that has such a low resistance that the required high pulse currents are obtained at supply voltages of below 60 V. The transfer switch is an H bridge with four switches (7) that contain equal numbers of MOS transistors connected in parallel. The short pulse times that are achieved using the MOS transistors allow the use of shaped current conductors with which magnetized areas can be produced with a very high precision. The inventive system provides a means for saving components, electric power and time by a factor of up to 100.

摘要翻译： 本发明涉及一种脉冲磁化高精度磁标度的系统。 该系统包括由电容器组（3），转换开关（4）和控制单元（5）组成的成形电流导体（1）和脉冲电流源（2）。 系统的紧凑设置是具有如此低电阻的电源电路的先决条件，在低于60V的电源电压下获得所需的高脉冲电流。转换开关是具有四个开关（7）的H桥， 其包含相等数量的并联的MOS晶体管。 使用MOS晶体管实现的短脉冲时间允许使用可以以非常高的精度制造磁化区域的成形电流导体。 本发明的系统提供了将部件，电力和时间节省高达100倍的装置。