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Would like to thank you for this useful simple project. I made it on a breadboard and running for last 3/4 days without any problems. I have added 2 LED to indicate circuit is online + AC line ON/OFF with a 12v DC 1000mA power supply even you suggest not to add LED for circuit. what if I use a 1500mA power supply ? as you said LED itself takes 1A ! before I go for PCB layout I would like to see back side connection of your PCB as it looks very neatly assembled. Thanks for your time.