笔者读了《家庭电子》1998年第10期《555时基电路放电开关的妙用》一文以后收获颇大。笔者认为如果将555电路第③、⑦脚同时接上负载,并如附图所示连接,将使555带负载电流能力成倍增加。这是因为当第③脚为高电平时,第⑦脚放电开关关闭;反之当第③脚为低电平时,第⑦脚放电开关打开, I read the “home electronics” 1998 the tenth period “555 time-base circuit switch magical effect,” a great success after the article. I believe that if the 555 circuit of the first ③, ⑦ feet at the same time connected to the load, and connected as shown in the figure, will 555 with the load current capacity multiplied. This is because when the third pin is high, the first ⑦ pin discharge switch is closed; the other when the third pin is low, the ⑦ foot discharge switch is turned on,