数码 返回
天气预报 > 数码 > pwm和dc有啥区别吗
pwm和dc有啥区别吗
更新时间： 2020-12-23 00:00:00  

PWM调光屏幕在点亮时并不是持续发光，而是在不停地点亮、熄灭屏幕，在屏幕亮、灭的过程中，灭屏状态持续时间越长，屏幕给肉眼的观感就是亮度越低。点亮的时间越长，灭屏时间就相应减少，屏幕就会变亮。而DC调光是通过提高或降低电路功率来改变屏幕的亮度，功率＝电压*电流，所以改变电压或电流都能改变屏幕亮度。

关键词： pwm dc 区别

pwm和dc有啥区别吗相关经验

天气预报

最新推荐

页面:/news/view-1086846/ | 耗时:1.0204 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1086846 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1086846 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1086846 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1098711,1114064,3414809,1091681,1122162,902241,1224762,682829,146999,1092702,84629,1089530,1303690,1105671,1116415,1912723,1108852,1795028,84677,1231376,98998,1109348,1084503,1086834,1083018,1087635,1096272,1098430,1085522,1236061) ORDER BY field (ArticleID,1098711,1114064,3414809,1091681,1122162,902241,1224762,682829,146999,1092702,84629,1089530,1303690,1105671,1116415,1912723,1108852,1795028,84677,1231376,98998,1109348,1084503,1086834,1083018,1087635,1096272,1098430,1085522,1236061)