当接上电池时,继电器吸合,开关电源的输出对电池充电,当中途去掉电池时,继电器要断开,停止充电,用光耦来实现电池的防反接.
现在的问题是:
当接上电池时,继电器吸合,可去掉电池时,变成了开关电源继续对光耦供电,继电器不断开.
哪位高手帮我看看,怎么改一下,最好是去掉电池后,光耦就不工作了.
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