发明授权
- 专利标题： Frequency converter having low supply voltage
- 专利标题（中）： 变频器具有低电源电压
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申请号： US10776199申请日： 2004-02-12
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公开(公告)号： US06954089B2公开(公告)日： 2005-10-11
- 发明人: Toshiyuki Umeda , Shoji Otaka , Tetsuro Itakura
- 申请人： Toshiyuki Umeda , Shoji Otaka , Tetsuro Itakura
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2001-266647 20010904; JP2002-210565 20020719
- 主分类号： H03D7/12
- IPC分类号： H03D7/12 ; H03D7/14 ; H03L7/16 ; H03B19/00
摘要：
A frequency converter configured to convert a first current signal having a first frequency into a second current signal having a second frequency different from the first frequency is disclosed, which comprises an adder configured to add the first current signal and a predetermined reference current signal to output a third current signal corresponding to the sum of the first current signal and the reference current signal, and a switching circuit configured to pass only that portion of the third current signal which is larger in magnitude than a threshold current to output the second current signal.
公开/授权文献
- US20040160246A1 FREQUENCY CONVERTER HAVING LOW SUPPLY VOLTAGE 公开/授权日：2004-08-19