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贵刊99,No.12,P.21刊登的《充电机极性自动校正器》一文,电路上仍存在缺陷。当待充电池反接时,通过J1常闭触点形成瞬间短路,端电压下降严重,J1可能不吸合而继续短路,尤其是亏电严重的待充电池。现改进如下。工作原理:图1充电前J1、J2释放。接通待充电池后,若极性正接则J2吸合;极性反接则J1吸合;电池亏电严重则J1、J2均不吸合,另作连接处理,不存在短路。图2若极性正接则J2吸合J1不动作;若极性反接
Your publication 99, No.12, P.21 published a “charger polarity automatic corrector,” a text, the circuit is still flawed. When the battery to be reversed when connected through the J1 normally closed contact instantaneous short circuit, the terminal voltage drop serious, J1 may not continue and short circuit, especially in serious deficit battery to be recharged. Now improved as follows. How it works: Figure 1 before charging J1, J2 release. Connected to be rechargeable batteries, if the polarity is positive then J2 pull; polarity reverse then J1 pull; battery power loss serious J1, J2 are not pull, the other for connection processing, there is no short circuit. Figure 2 If the polarity is positive then J2 J1 J1 action; reverse polarity