Reversible Running Illumination Controller(C043,C301,C188,C003)

Published:2011/8/25 7:43:00 Author:Sue | Keyword: Reversible, Running Illumination, Controller | From:SeekIC

When IC2'spin 9 outputs high level, this level signal will be put on IC3's CP terminal and will make it reverse. IC1's U/D terminal will become high level.Then IC1 will begin to count by subtraction from next clock pulse which will make the controlled illumination be turned on by turns from 9 - 0 . When IC2's 0 terminal outputs high level, the above-mentioned process will be repeated which will make IC1 begin to count by addition. So the repetition of the above-mentioned process can realise the reversible control of the running illuminations. Besides, by adjusting potentiometer w in the circuit, the running speed can be adjusted.What's more, ifresistance value of resistor R2 is increased properly, the running speed of the illuminations can be lower than 0.5HZ.



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