专利内容由知识产权出版社提供
专利名称：Ambient light responsive illumination
brightness control circuit
发明人：Carl R. Pittman申请号：US05/549913申请日：19750214公开号：US03962600A公开日：19760608
摘要：A circuit for automatically changing the amount of light provided by an
illuminating source which contains a light sensitive device for monitoring the ambient lightlevel. The light sensitive device controls current flow through a first path which includesthe illumination source. A second path also provides current flow through theillumination source. When current is flowing through both paths, the source emits apredetermined amount of light. When only the second path conducts, the light providedby the illuminating source is substantially decreased.
申请人：ARVIN HONG KONG LTD.
代理机构：Jenkins, Hanley & Coffey
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