发明授权
US07133601B2 Amperage control for protection of battery over current in power tools 有权
用于保护电动工具中电池过电流的电流控制

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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