l MHZ LED pulse modulation circuit

Published:2011/4/26 22:48:00 Author:Nicole | Keyword: LED, pulse modulation | From:SeekIC

This circuit provides GaAsP LED's fast conduction with low drive resistance. This LED can be used as optical fiber or other beam high speed pulse modulation source. Q1 provides Q3(follower)with DC level and modulation information. Q2 detects output current, and it limits the current within 30mA. The conduction time is 12ns when it is maximum range.



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