DUAL_EDGE_TRIGGERING

Published:2009/7/1 19:49:00 Author:May | From:SeekIC

Although 9602 multivibrator IC can be triggered normally either on leading or falling edge of square wave, but not on both, addition of two resistors and one capacitor provides double-edge triggering. When input goes low, negative-going pulse through C1 triggers 9602 and makes it deliver one output pulse. When input goes high again, high-going pulse is delivered directly to pin 12 of 9602, triggering it again so it produces an other pulse.-J. P. Yang, Circuit Triggers 0ne-Shot on Both Edges of Square Wave, EDN Magazine, Nov. 15, 1972, p 49.



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