Patent ID: 8405334
Filing Date: 2013-03-26
Classification: A61G,H02P

Abstract:
1. A motor driving circuit, comprising: a relay unit having a first pin, a second pin, a third pin, a fourth pin, and a fifth pin; the first pin electrically connected to a first motor contact, the second pin electrically connected to a first power contact, and the third pin electrically connected to a second motor contact; and the first pin electrically connected to the second pin when currents flowing through the fifth pin and the fourth pin, and the first pin electrically connected to the third pin when no current flowing through the fifth pin and the fourth pin; a first diode unit having an anode and a cathode, and the anode of the first diode unit electrically connected to the first power contact and the cathode of the first diode unit electrically connected to the fifth pin; a second diode unit having an anode and a cathode, and the anode of the second diode unit electrically connected to a second power contact and the cathode of the second diode unit electrically connected to the fifth pin; a fourth diode unit having an anode and a cathode, and the anode of the fourth diode unit electrically connected to the fourth pin and the cathode of the fourth diode unit electrically connected to the first power contact; a fifth diode unit having an anode and a cathode, and the anode of the fifth diode unit electrically connected to the fourth pin and the cathode of the fifth diode unit electrically connected to the second power contact; a sixth diode unit having an anode and a cathode, and the anode of the sixth diode unit electrically connected to the first power contact; a eighth diode unit having an anode and a cathode, and the anode of the eighth diode unit electrically connected to the second power contact; a first transistor unit having a first terminal, a second terminal, and a third terminal, and the first terminal of the first transistor unit electrically connected to the second motor contact, the second terminal of the first transistor unit electrically connected to the cathode of the sixth diode unit, and the third terminal of the first transistor unit electrically connected to the second power contact.