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AssigneeSiemens VDO Automotive Corporation
InventorsJohn E. Makaran, Dragan Radavcovic
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A motor circuit includes a first brush-type motor, a second brush-type motor, a switch, and a pulse width modulation circuit. The first brush-type motor has a first voltage connection and a second voltage connection, the second voltage connection adapted to be coupled to a source of DC voltage. The second brush-type motor has a third voltage connection and a fourth voltage connection, the fourth voltage connection adapted to be coupled to the source of DC voltage. The switch has a control input, a first contact and a second contact, the first contact coupled to the source of DC voltage, and the second contact coupled to the first voltage connection and the third voltage connection. The switch is operable to selectively connect the first contact to the second contact based on a voltage at the control input. The pulse width modulation circuit is operable to generate a pulse width modulated (PWM) signal. The pulse width modulation circuit is operably coupled to provide the PWM signal to the control input of the switch.
A motor circuit comprising:
A motor control circuit for use in a motor circuit, the motor control circuit comprising:
A method of operating brush-type motors, comprising:
A fan assembly comprising:
Dependencies are inferred from the claim text.