UJT_LED_PULSER

Published:2009/7/15 4:01:00 Author:Jessie | From:SeekIC

Rise time of output pulse is about 200 ns and width is about 25 μs when using 1 μF for C1. Reducing value of C1 reduces pulse width. C1 charges through R1 until voltage across C1 is high enough to bias UJT into conduction. C1 then discharges through UJT and LED and cycle repeats. LED can be any common type.-F. M. Mims, Electronic Circuit book 5:LED Projects, Howard W. Sams, Indianapolis,IN, 1976, p 30-32.



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