Symmetric Power Supply 12V

Symmetric Power Supply 12V

1- Shematic :

           

2- Circuit Components :

. 1 Transformer: 230 V Primary / 9V-12V Secondary / 2A (A transformer steps down the mainvoltage)
. 4  Diodes (1N4001 to 1N4007) used as a bridge rectifier (1A bridge)
. 2 Filter Capacitors 2200uF/ 25V ( used for filtering of undesirable frequencies )
.  2 Filter Capacitors 100uF/25V

.  2  lED ( green and red)
. 1 Votage Regulator LM7812 ( we use it to produce a steady 12Volt DC ) 

. 1 Votage Regulator LM7912