Verify the enclosed LED dimmer circuit using Triac BT136 and MOC3021 circuit

I am Chintan Gopani. We have designed the Dimmer circuit using Triac BT136 and MOC3021 and Zero crossing detection circuit and other peripheral devices. Our application is to dim the standard dimmable LED lights fixtures in the USA.

Our application is based on the USA market. I attached the design file for the review.

I request you that please schedule the call with a technical person for the design improvement.

michaelkellett over 2 years ago in reply to chintan

This isn't quite what I had in mind.

Do you have an ocilloscope ?

You will need to take precautions re. isolation of mains AC voltages to do any measuring here.

If you do not understand why this is necessary or do not know how to safely measure mains powered equipment then you will need to find someone to do the work for you.

It will not be possible to debug this design without checking waveforms with a scope.

Is this a commercial project (ie are you designing something which you wish to amkes and sell) ?

MK
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chintan over 2 years ago in reply to michaelkellett

Yes, This is commercial project
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chintan over 2 years ago in reply to michaelkellett

It is working fine with Incandescent light bulb without any flcikring. we are dimming the bulb by PWM signal with 50Hz frequency i.e. waveform has T=20ms. And based on that we are changing the duty cycle as per zero-crossing detection
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chintan over 2 years ago in reply to chintan

But it is flicker while we used LED bulb and it is flickering while brightness has been increased above 70%
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michaelkellett over 2 years ago in reply to chintan

Without scope traces of waveforms it is not possible to make any useful comment.

MK
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