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Motor controlling circuit for multiple control modes

Image Number 4 for United States Patent #8384326.

A motor driving circuit has a motor operated with a forward operation, a reverse operation, an inactivating operation, and/or a brake operation under a constant current mode, a constant voltage mode, and/or a full swing mode. The motor driving circuit also prevents usage of multiple operational amplifiers and errors brought by the usage of the multiple operational amplifiers with simple circuit designs.

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