发明授权
US07638992B2 Drive power control device, liquid ejection apparatus, and drive power control method
失效
驱动电源控制装置,液体喷射装置和驱动电源控制方法
- 专利标题: Drive power control device, liquid ejection apparatus, and drive power control method
- 专利标题(中): 驱动电源控制装置,液体喷射装置和驱动电源控制方法
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申请号: US11656954申请日: 2007-01-24
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公开(公告)号: US07638992B2公开(公告)日: 2009-12-29
- 发明人: Yasuhiko Kosugi
- 申请人: Yasuhiko Kosugi
- 申请人地址: JP Tokyo
- 专利权人: Seiko Epson Corporation
- 当前专利权人: Seiko Epson Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2006-015430 20060124
- 主分类号: G05F1/00
- IPC分类号: G05F1/00
摘要:
A drive power control device according to the present invention includes a transistor, which is input with a driving signal before current amplification into a base thereof, and which amplifies a current of the driving signal to drive an actuator; a switching element, which switches an input of a supply voltage to a collector of the transistor between on and off; and a voltage comparator, which compares a base voltage and a collector voltage of the transistor, and which controls the switching element such that the input of the supply voltage to the collector is turned off when a predetermined voltage difference occurs, and the input of the supply voltage to the collector is turned on when a predetermined voltage difference does not occur.