220v AC to 12v DC Supply without using of transformer

In this mini supply we don't use the transformer to step down voltages. It gives few mA and generate less heat. It is low cost project with less component use.The main circuit diagram is shown below.

PCB design is as following.

PCB layout with silk is shown below.

3D view of this circuit is shown. in this we us bridge rectifier of 5Amps.