| 摘要 |
PROBLEM TO BE SOLVED: To energize a motor in a normal direction by providing a rectifying circuit for making constant the direction of the potential difference between the pairs of input terminals, even of the polarities of the pair of output terminals are reversed and the direction of the pair of the output terminals is changed between a pair of output terminals which are connected to a DC power supply and a pair of input terminals of a DC motor. SOLUTION: When an output terminal T1 is connected to a positive pole at high potential, and an output terminal T2 is connected to a negative pole at low potential, as shown by a solid line in a battery 1, a current from the output terminal T1 flows to the output terminal T2 through a diode D2 of a rectifying circuit 3, an output terminal T11, a DC motor 2, an input terminal T12, and a diode D4, thus normally energizing the motor 1 by setting the input terminals T11 and T12 to '+' and '-', respectively. Also when the output terminals T1 and T2 are set to '-' and '+', respectively, as shown by two dashed lines, the current from the output terminal T2 flows to the output terminal T1 via a diode D3 of the rectifying circuit 3, the input terminal T11, the motor 2, the input terminal T12, and a diode D1, thus preventing the reverse rotation of the DC motor. |
