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Hi,
We have done lots of research in AC phase cut dimming application, but still getting flickering issue.
Our project file & block diagram is attached here. We want to switch to interrupt enable software, please support us if anyone have done this.
Solved! Go to Solution.
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Hi Dharmendra,
The issue is normally found when LED light is used as load. See the following article found on internet.
Why TRIAC Dimmers Often Cause Flickering, Blinking in LED Lamps
Best Regards,
Vasanth
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Hi,
When are you seeing the flickering issue ? Is it present all throughout or only while changing the brightness? If it is happening while dimming, is it happening when you are at a specific range ? What type of load are you using ? Is it an LED light ?
Best Regards,
Vasanth
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dhsa,
is zero-crossing input works reliably? What is phase-shift between AC mains and digital signal? Can you post an o-scope screenshot?
/odissey1
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dhsa,
Is rectifier BR1 necessary for optocoupler operation? According to the part number (H11AA2), it is bi-polar.
/odissey1
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Yellow is our ZCD signal of 100Hz & Pink is Output AC.
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Hi Dharmendra,
The issue is normally found when LED light is used as load. See the following article found on internet.
Why TRIAC Dimmers Often Cause Flickering, Blinking in LED Lamps
Best Regards,
Vasanth