How to convert AC to DC without Transformer, 220v to 12v dc converter - YouTube
What is the best transformerless power supply circuit for converting AC to DC (230VAC to 12VDC)? - Quora
Transformerless Power Supply (220V AC to 14V DC) circuit + pcb - Share Project - PCBWay
Transformerless power Supply - 24VDC, 120V AC and 230V AC - Electrical Engineering Stack Exchange
Transformerless Power Supply Circuit Diagram
How to convert a 220V AC to 12V 5A DC without a transformer - Quora
220 volt Ac to 12 Volt Dc Power Supply without Transformer - YouTube | Electronic circuit projects, Power supply circuit, Electronics projects for beginners