convert 220v to 12v without transformer

How to convert 220v ac to 12v dc without transformer

Needed
474k/250v

820ohm 1/4w

10uf 50v

4*diodes

Now follow the circuit picture

This circuit for how to make a 220v ac to 12v dc without any transformer.
this project can help to make low cost converter.

Diode bridge is important circuit for all ac to dc converting circuit. Because diomond diode bridge can convert ac to dc .. two Diodes for AC and another two for anode and cathode (direct current)

Now the time for parts explanation

Zener diode working method
A Zener diode is a particular type of diode that, unlike a normal one, allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the so-called "Zener voltage" is reached. Zener diodes have a highly doped p-n junction.

Transformer defination

Electrical power transformer is a static device which transforms electrical energy from one circuit to another without any direct electrical connection and with the help of mutual induction between two windings. It transforms power from one circuit to another without changing its frequency but may be in different voltage level.

Note
connect diode anode and cathode
most important think is capasiter connecting.
resister can work under ohms law.
ohms law is V=IR

Units
Voltage=v
I=A
R=ohm

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