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WORKING OF THIS CIRCUIT

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JOPRE

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working of this circuit, why they used two transformer in diffrent style
 

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THERE'S NO NEED TO YELL!!!!!
 
1. HELLO
2. MY PROBLEM IS.
3. I WOULD APPRECIATE HELP.

MY CONSULTANCY RATE IS £50 PER HOUR TO ANSWER SUCH QUESTIONS (joke!).
 
why they used two transformer in diffrent style
They did not use two transformers.
T1 is not a transformer it is a "common mode choke", which is intended to prevent the high frequency noise which is generated by the switching supply, from being conducted back into the mains wiring.

JimB
 
before you blow your hat off, follow the datasheet very carefully. C1/C2/C3 need to be rated to at least 400V. I would not suggest making this circuit on veroboard either
 
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