Automatic light on off | Projects › Projects › Automatic light on off This topic has 1 reply, 2 voices, and was last updated 8 years, 5 months ago by Prabakaran P M. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts June 25, 2016 at 7:58 am #4496 SParticipant pls somebody tell me how to give supply to the circuit , wether it need 2 seperate DC supply ? How come the ic741 produces pulses to ic4071 when it is powered with noramal 9v DC battery? June 27, 2016 at 9:26 am #14010 Prabakaran P MParticipant Can you more specific about the problem, On which circuit you are referring, give the circuit or the link of this project??? Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In