my first design.. pls help

[Sugar1]

hi.. i really need help correcting me with this one.. cuz i really know that there is something wrong with my design since this is my first one and im still a newbie..

by the way... this is a 9v power supply output.. and im using a transformer that is 220v 12-0-12.

heres the schematics and my design:

View attachment 35171

 

[Sugar1]

i forgot to display design... sorry...

i really really need your help, advice or correction on this one..THAnX

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[MP1]

The 0 or center tap of your transformer should be connected to the ground or minus side of your output as well.


MP

 

[MP1]

Here I have made a small change on your board layout.

MP

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[Sugar1]

Thanks a lot ;D ;D ;D

 

[ante1]

Hi.
I think C2 and C3:s connections should be as short as possible and be located closer to the regulator.

Ante :

 

[bogdan2]

since you are using 4 diodes, this forms a full bridge rectifier. so you need to power your circuit from 0 and 12V.
you could use 0 as ground and use 2 diodes, one from each 12V connection and you get a full wave rectifier also. here is what i mean...

the 2 circuits show the 2 ways you cand do the rectifying. from the cap you connect the regulator and other components.

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