发明名称 |
ARTICULATING DRILL WITH OPTICAL SPEED CONTROL AND METHOD OF OPERATION |
摘要 |
<p>A method of operating a hand power tool in one embodiment includes generating a variable speed control signal with a solid state switch that corresponds to a selected speed for a motor, generating a pulse width modulated (PWM) signal corresponding to the variable speed control signal, generating H-bridge driving signals for an H-bridge circuit in correspondence with the PWM signal, and selectively coupling a motor to a power source using the H-bridge circuit in accordance with the H-bridge driving signals.</p> |
申请公布号 |
EP1943059(B1) |
申请公布日期 |
2014.03.12 |
申请号 |
EP20060836955 |
申请日期 |
2006.11.03 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
POZGAY, DAVID;DECICCO, JOHN;KOVARIK, IIYA |
分类号 |
B25F5/02;B25B21/00;B25B23/14;H01H9/06;H02P7/29 |
主分类号 |
B25F5/02 |
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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