发光二极管与普通二极管一样是由一个PN结组成,也具有单向导电性。当给发光二极管加上正向电压后,从P区注入到N区的空穴和由N区注入到P区的电子,在PN结附近数微米内分别与N区的电子和P区的空穴复合,产生自发辐射的光。( )
Camera – 8-bit camera interface, optional 2.0MP camera with OV2640 sensor Power supply – 3.3V ~ 24V Power Consumption – 32mA in active mode (WIFI connected, camera not working) Dimensions – 36mm x 37.5mm While Vigtek IOT Core can be used without programming, simply using an Android ...
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