precise optical and black control circuit

Published:2011/8/25 20:46:00 Author:chopper | Keyword: precise, optical and black, control circuit | From:SeekIC

The precise optical and black control circuit is shown as picture. Sinceittakes some positive feedback through R5, changes will be slight behind the actionif the light changes, in order to avoid the frequent jitterof relay when light intensityis on the critical state.



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