| 摘要 |
A solid-state device of simple construction for preventing an erroneous start of a battery-powered vehicle, whereby an acceleration and deceleration controller is not actuated if a DC power supply is connected to a reversible motor by turning on a power supply key switch and a vehicle forward or rearward moving direction switch in an incorrect sequence, so that the vehicle can move neither forward nor rearward. According to the present invention, there is provided a solid-state erroneous start preventing device comprising a power supply key switch, an operating switch for directing the vehicle to move forward or rearward, a first switching circuit including a reverse blocking triode thyristor and a trigger circuit therefor, the first switching circuit being turned on when the power supply key switch is turned on with the operating switch turned off, turned off when the former switch is turned on with the latter switch turned on, and also being turned on when the latter switch is turned off after the former switch is turned on with the latter switch turned on. A second switching circuit is provided, which is turned on when the operating switch is turned on for connecting a DC power supply to a reversible motor so that the acceleration and deceleration controller actuates the reversible motor to rotate when the first switching circuit turns on.
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