下图是采用TL494设计的驱动电路:
1.过放电保护电路(电池电压低到9.8V时动作)带自锁.
2.过流保护电路,可以取一段地线取样也可以用互感取样,保护电流可以调节.
3.有输出稳压电路
![](http://u.dianyuan.com/bbs/u/83/1764031259220118.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20)
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