4_h_SEQUENTIAL_TIMER

Published:2009/7/12 22:32:00 Author:May | From:SeekIC

Use of N8281 divider network between sections of 556 dual time gives extremely long timedelays without costly large low-leakage capacitors. First section operates as oscillator having period of 1/f. Oscillator output is applied to divide-by-/N network to give output with period of N/f for triggering second half of timer. Connection of divider to second section determines amount of delay introduced by divider. Cascading of additional dividers increases maximum delay to days or even weeks.- Signetits Analog Data Manual, Signetics, Sunnyvale, CA, 1977, p 724.



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