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Williams, Jim. "Basic flashlamp illumination circuitry for cellular telephones/cameras--design note 345.(Advertisement)." EDN Asia. Canon Communications L.L.C. 2004. HighBeam Research. 21 Apr. 2018 <https://www.highbeam.com>.
Williams, Jim. "Basic flashlamp illumination circuitry for cellular telephones/cameras--design note 345.(Advertisement)." EDN Asia. 2004. HighBeam Research. (April 21, 2018). https://www.highbeam.com/doc/1G1-125568007.html
Williams, Jim. "Basic flashlamp illumination circuitry for cellular telephones/cameras--design note 345.(Advertisement)." EDN Asia. Canon Communications L.L.C. 2004. Retrieved April 21, 2018 from HighBeam Research: https://www.highbeam.com/doc/1G1-125568007.html
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Introduction
Next generation cellular telephones will include high quality photographic capability. Flashlamp-based lighting is crucial for good photographic performance. A previous full-length Linear Technology publication detailed flash illumination issues and presented flash circuitry equipped with "red-eye" reduction capability. (1,2) Some applications do not require this feature; deleting it results in an extremely simple and compact flashlamp solution.
Flashlamp Circuitry
Figure 1's circuit consists of a power converter, flashlamp, storage capacitor and an SCR-based trigger. In operation the LT[R]3468-1 charges C1 to a regulated 300V at about 80% efficiency. …
EDN Asia; July 1, 2006
EDN; June 10, 1993
EDN; May 30, 2002
EDN; September 2, 2004
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