0~16 Hours Stepless Timing Controller Circuit (NE555, CD4040)

Published:2011/9/6 4:45:00 Author:Felicity | Keyword: Stepless, Timing Controller | From:SeekIC

This controller consists of two stage timer and driver. Timing circuit 1 consists of IC1(555) and two 12 bit binary counter/frequency divider IC2 and IC3(CD4040) to produce totally 16 adjustable timing signal as:0,1,2......14,15hour(s). Timing circuit Ⅱwhich is controlled by timing circuit I consists of IC4(555) and two 12 bit binary counter/frequency divider IC5 and IC6(CD4040) .Timing circuit controls timing circuit Ⅱby the reset terminal of IC4 and timer I can produce 0~60 minutes continuously adjustable timing signal.



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