Transformerless 230VAC to 230VDC

From what i see, better you don't do a project like this. Take care

Yes i agree with hurz. Microwave transformers often work with extremely high voltages in the order of a few kV at a few kW so i don't recommend playing around with such things. Even if you do know what you're doing it's extremely dangerous. At 2kV you don't even have to directly touch the wire, it'll arc across and zap you. Moreover transformers don't work with DC

@thebugger no. I removed the secondary coil only the primary coil

You have to set 325 peak vac to have 230 rms

Which is maximum current suitable?

Don't. Just don't. Wind a secondary that suits your needs. As i remember microwave transformers have a large core, and they dont require much turns, maybe a few hundred or so. Find a suitable wire. Wind 5 or 6 turns measure the voltage and determine the winding ratio. Then calculate how much windings you need to get it to 1:1. Then just add a simple bridge rectifier and you're ready. I seriously don't recommend transformerless power supplies. They are tricky, dangerous, waste a lot of energy, that increases exponentially with the required power. If you spend 10W, you may need to dissipate another 100W in heat, for it to work properly. Just wind yourself a transformer, it takes no more than an hour if you have the right materials and skills. Moreover microwave transformers can supply you much power, effortlessly (1kW or so).

Try this. Wind 20 turns as the secondary. If you get 10V (presumably) then your windings ratio is 220:10=22. Multiply the voltage ratio by the turns of the secondary which you've made (20). You get 22*20=440. So you need to wind 440 turns to get 220V at the output. After rectification you'll get 320VDC. Look at the primary and choose the same or slightly thinner wire for the secondary. These transformers are powerful and often have an efficiency above 95% so you can safely choose the same wire size as the primary. You'll probably get 1kW of power with this, which is ideal for almost any purpose.

Check out my new circuit. Rewinding a Transformer Simplified.

I agree u should use this just for low power circuit like for example few LEDs. But rather buy or wind transformer it's much safer than this or if u are more advanced build switching power supply.

Your guys still not understand what I mean I put my secondary coil to trash. And use only primary coil as the electromagnet in the iron core I will apply my electro magnet to 230 volt but this will make a loud buzz. So I explained dc will remove the loud buzz

The buzz occurs because you haven't fastened the primary. Lock it somehow into place and the buzz will dissappear.

I sain j making a electro magnet with that core with primary coil..

Yes, okay now i get it. Just secure the coil so it doesn't move when AC flows through it. DC will also fix the problem, but it's easier to just find a way to block it so it doesn't move

I want a strong DC magnetizer