There have been many low current designs posted. Most are for 1 to 5mA. It is hard to get much power from the "transformerless" style.
Here is a design of a one IC PWM "buck down" style. Inside the IC there is a 630V 300mA MOSFET. (DRAIN--SOURCE)
This part was not designed for this application but works. https://www.linear.com/product/LT8315
This IC is new to me. I did not build this. I have built several Buck, PWM, Transformerless Power Supplies.
High voltage will kill.
Vin is from the power line.
"GND" is from the power line and is not ground.
The "+12V" is not at ground but lives on top of the power line.
The "GND" pin on the IC is not ground! It has high frequency switching!
Do not connect the ground lead of a scope to any part of this circuit!
---edited---
I see there is a part missing!
You need to add a full wave bridge between the power line and the first capacitor at "Vin".
Here is a design of a one IC PWM "buck down" style. Inside the IC there is a 630V 300mA MOSFET. (DRAIN--SOURCE)
This part was not designed for this application but works. https://www.linear.com/product/LT8315
This IC is new to me. I did not build this. I have built several Buck, PWM, Transformerless Power Supplies.
High voltage will kill.
Vin is from the power line.
"GND" is from the power line and is not ground.
The "+12V" is not at ground but lives on top of the power line.
The "GND" pin on the IC is not ground! It has high frequency switching!
Do not connect the ground lead of a scope to any part of this circuit!
---edited---
I see there is a part missing!
You need to add a full wave bridge between the power line and the first capacitor at "Vin".