| 摘要 |
A jumper cable apparatus includes two couplers, and a device for shutting off an electric coupling between the couplers when the couplers are wrongly coupled to electric poles, or for electrically coupling the couplers together when the couplers are coupled to correct electric poles. A relay is coupled between the couplers, and is coupled to another relay for actuating the relay to shut off the electric coupling between the couplers. A positive voltage detecting device may be used for detecting whether the couplers have been correctly coupled to the electric poles or not.
|
