发明申请
- 专利标题: VOLTAGE DIVIDING CIRCUIT AND MAGNETIC SENSOR CIRCUIT
- 专利标题(中): 电压分流电路和磁传感器电路
-
申请号: US12192421申请日: 2008-08-15
-
公开(公告)号: US20090079411A1公开(公告)日: 2009-03-26
- 发明人: Minoru ARIYAMA
- 申请人: Minoru ARIYAMA
- 申请人地址: JP Chiba-shi
- 专利权人: Seiko Instruments Inc.
- 当前专利权人: Seiko Instruments Inc.
- 当前专利权人地址: JP Chiba-shi
- 优先权: JPJP2007-215949 20070822
- 主分类号: G05F1/648
- IPC分类号: G05F1/648
摘要:
To provide a variable voltage dividing circuit capable of changing voltage values of a detection point and a release point along with a change in power supply voltage without changing a hysteresis width. The variable voltage dividing circuit according to the present invention includes: a voltage dividing unit which includes a resistor string formed of a plurality of resistors connected in series, and outputs divided voltages divided at connection points of the plurality of resistors, one end of the resistor string being applied with a first voltage, another end thereof being applied with a second voltage; a first constant current source connected to a first connection point of the resistor string; and a second constant current source connected to a second connection point located symmetrically to the first connection point with respect to a center of the resistor string in the resistor string, in which, in accordance with a voltage difference between the first voltage and the second voltage, any one of the first constant current source and the second constant current source subtracts a first adjustment current from a current flowing through the resistor string, and another thereof feeds a second adjustment current to the resistor string.
公开/授权文献
- US07956598B2 Voltage dividing circuit and magnetic sensor circuit 公开/授权日:2011-06-07
信息查询
IPC分类: