Basic Electronic.

1. Name; Jameel ahmed khoso.

2. All active electronic devices require a source of constant
dc that can be supplied by a battery or a dc power
supply.
Ac to dc converter
How can we converts AC 220 to DC 12v

3. TRANSFORMER
A transformer is a device that is used to either raise OR
lower voltages in an electrical circuit.
For example transformer lower the voltages 220 Ac to
12Dc volt.
This transformer is 12v because we
want to lower voltages at least 12v
For dc load required .

4.  Transformers work in the “magnetic
domain”, and transformers get their name
from the fact that they “transform” one
voltage or current level into another.
 Transformers are capable of either
increasing or decreasing the voltage and
current levels of their supply, without
modifying its frequency, or the amount of
electrical power being transferred from one
winding to another via the magnetic circuit.

5. RECTIFIER
A rectifier is an electrical device
that converts alternating current (AC), to direct
current (DC), which flows in only one direction.
This is a rectifier for convert 12v Ac to 12v Dc.

6. FILTER
The filter eliminates the fluctuations in the rectified
voltage and produces a relatively smooth dc voltage.
We use filter for because we wants dc current pure.

7. RESISTER
 A resistor is a passive two-terminal electrical
component that implements electrical resistance as
a circuit element. In electronic circuits, resistors are
used to reduce current flow, adjust signal levels, to
divide voltages, bias active elements, and
terminate transmission lines, among other uses.

8. THE BRIDGE RECTIFIER
 The bridge rectifier is similar to a full-wave
rectifier because it produces a full-wave
output voltage.
 Diodes D1 and D2 conduct on the positive
half-cycle, and D3 and D4 conduct on the
negative half-cycle. As a result, the rectified
load current flows during both half-cycles.

9. The Bridge Rectifier

10. THIS IS PROCESS OF AC 220 TO 12V DC
 First of all a 12v transformer for low to voltage from
220v to 12v Ac
 Second rectifier we use for convert 220v Ac to 12v
dc.
 The filter eliminates the fluctuations in the rectified
voltage and produces a relatively smooth dc
voltage.
 Resister we use for give exact power to load.

11. OUR PROJECT
Ac 220v to Dc 12v