1、使用限流电阻试验是没有问题的,长期使用的话,不推荐。
2、LED供电最好使用恒流源,不是稳压电源。
3、24VAC,整流输出后大约为30VDC,降压到12V,你的LED是多少瓦的?电流多大?
4、每个LED灯珠两端电压3V多,12V计划串联几个呢?24个怎么分配?
追问LED24颗,刚才我测了下24颗LED的电流34毫安,我想长时间点亮。输入和输出端需要多大的限流电阻?
追答怎么测的是34mA,两端电压是多少?你画个简单的图吧
追问![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/2cf5e0fe9925bc31b9b080dd5fdf8db1ca137082?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追答LED是24只串联?你现在用几只LED串联得到的8.9V?
看看这个
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d01373f082025aaf4d2a4d8dfaedab64034f1a5f?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b151f8198618367adcba4c9b2f738bd4b31ce540?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)