How to convert 220v to 9v?

Question

Electronics

Need to convert 220 volts to 9 volts, how to do it??

Answer 1

A transformer is used for conversion. If you then need to get direct current from alternating current, then also put a rectifier.

Answer 2

Or step down transformer or switching power supply.
With questions like this, it's probably better for you to just take a ready-made 9V power supply or an adjustable power supply.
And yes, the output needs a constant or a change? What is the current consumption on the 9V line?

Answer 3

Do you need 9V DC?

Answer 4

I recommend google for key phrases:
power supply, transformer, rectifier (in case you need direct current)

Answer 5

Something like this