cliff_ta3 Member Member since Mar 17, 2013 Last active Mar 18, 2013 Total activities 0 Activity feed Recent contributions #Threads 13 years ago 9ae66048-340b-4360-8a52-00dc0308c92d first i applied 4.5V in the source(Vcc). The traffic light system works properly. I decided to increase its voltage source to 12V,...