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ULTRA_LONG_MONO

2015-03-16 22:17  
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ULTRA_LONG_MONO
Has quiescent power drain of zero. Generates step-function gate with good leading and trailing edges, and provides delayed pulse of either polarity for triggering cascaded circuits. Q1 is 2N1442, scr Q2 is 2N1595 or 3A31, and ujt Q3 is 2N489. Values for R3 and C2 give 50-sec pulse duration.-Ultra-Long Monostable Multivibrator, Electronic Circuit Design Handbook, Mactier Pub. Corp., N.Y., 1965, p 66.