发明名称 |
Amperage control for protection of battery over current in power tools |
摘要 |
Amperage control of a power tool motor is provided by pulse width modulation of current from a power supply. The pulse width modulation may be varied according to the determined motor current and measured power supply voltage. The power supply preferably includes a battery, such a lithium ion or nickel cadmium.
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申请公布号 |
US2004179829(A1) |
申请公布日期 |
2004.09.16 |
申请号 |
US20040782400 |
申请日期 |
2004.02.18 |
申请人 |
PHILLIPS ALAN;JONES JULIE L. |
发明人 |
PHILLIPS ALAN;JONES JULIE L. |
分类号 |
H02H7/18;H02P7/00;H02P29/02;(IPC1-7):H02P5/06 |
主分类号 |
H02H7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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