| 摘要 |
When a driver handles a switch once, the system outputs an alarm signal which has a low value. The direct circuit(IC2) for the 2nd step pulse generation maintains step pulse and outputs. By the high value signal outputted, the transistor is turned on and the 1st relay and the 2nd relay moves. As the flicker signal of the flicker unit is inputted to the left right indication lamp, the power source(B+) is supplied to horn, and horn works and informs a danger to outside.
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