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Thanks Audioguru & FvM for suggestion.
After apply Audioguru circuit triac is always on.
Even when I remove Transistor triac is always on because of pull down resistor even when pull down resistor is 1M. IN this state I can see a high frequency noise on gate approx 18us pulse don't know coming...
Thank you very much Audioguru for pointing. I refer to original reference schematic and your suggestion match with it. you are genius.
I am aware of high voltage issue. While designing I will be careful for that. In Final application use case this pcb will reside inside switch board. so no...
Hello All,
I am trying to drive triac with Positive Power supply.
With positive power supply it should be possible to drive triac in Q1 and Q4.
Here is the circuit I am using.
But triac is not triggering. I have checked in oscilloscope the signal on gate looks good enough.
I really need...
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