DC brushless motor driving device, DC brushless motor, and image forming device using the driving device and brushless motor

Invention: DC brushless motor driving device, DC brushless motor, and image forming device using the driving device and brushless motor

Year	Description
1995	Invention patented by Yukio Itami and Mitsuo Suzuki on April 23th, 1995. Abstract: A device for driving a DC motor includes a velocity control circuit generating a velocity control signal, a modulation circuit deriving a velocity control pulse signal having a pulse width modulated by the velocity control signal, a switching circuit, and a current-flow switching circuit. The switching circuit includes field effect transistors performing a switching operation, and a capacitor coupled between a power supply terminal and a reference potential. The capacitor absorbs a counter current caused in driving coils of the DC motor due to the switching operation.
Source: selected by the editor from original sources.