Dimming AC Bulb using TRIAC in pic16f877a | Microcontroller › PIC › Dimming AC Bulb using TRIAC in pic16f877a This topic has 2 replies, 3 voices, and was last updated 9 years, 7 months ago by Rohit. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts January 6, 2015 at 6:47 am #3387 NamrathaParticipant Anybody have an idea how to dim AC load with TRIAC after zero crossing with pic16f877a January 10, 2015 at 10:17 am #12509 Ashutosh BhattParticipant here is the project that uses micro controller with ZCD and SCR to dim the bulb http://www.engineersgarage.com/contribution/ac-dimmer February 14, 2015 at 11:44 am #12594 RohitParticipant you have to control the voltage input to the ac load that can be achived using triac… for that you have to control triggering angle of the traic using pwm… google on that u will find enough on that…. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In