发明名称 |
Brushless DC tachometer circuit |
摘要 |
A brushless tachometer utilizing four stator windings and series connected field effect transistor commutation switches to provide an input to a summing amplifier. Connection of the field effect transistor switches to the summing junction of the amplifier and use of series resistance and back-to-back clamping diodes on the winding side of the field effect transistors permits commutation switching with a minimum of transient voltage changes due to interruption of the stator winding current.
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申请公布号 |
US4088943(A) |
申请公布日期 |
1978.05.09 |
申请号 |
US19770772028 |
申请日期 |
1977.02.25 |
申请人 |
ELECTRO-CRAFT CORPORATION |
发明人 |
SCHMIDT, ROBERT H. |
分类号 |
G01P3/46;G01P3/48;(IPC1-7):H02P9/00 |
主分类号 |
G01P3/46 |
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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