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Ambient Light Sensors Slide 16

Because of RoHS legislation, cadmium sulfide (CdS) photoresistors are no longer permitted in countries in the European Union. They are easily replaced with silicon-based phototransistors. The schematic shown here is a night light application where the TEMT6000X01 replaced the CdS component. Only the value of R1 needed to be changed.

PTM Published on: 2008-08-25