我有支50mW laser ,用2xAAA電,但經常要換電(鹼性),而且越用越暗
我想將佢插落USB,但要降壓,我試過100ohm電阻,但係唔work
有咩方法整到,100%work!!!
收錄日期: 2021-04-24 23:20:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110313000051KK01357