hi

ive designed a power supply for 2 processors and 2 relays could someone please have a look at it to make sure it is ok or any improvements i can make to it?

thank you

 

You need a 0.1µF on the output of the 1st 12V regulator to prevent oscillation.

 

The first two caps (470-100uf) may not last very long if they are only 16V

 

You're right about the first one, I figure the base DC at 21VDC (look! Smoke!), the second cap should get 12V though, so it will be OK.

 

I'd like to see larger output filter capacitors, at least 1000μF on the 12V output and at least 680μF on the 5V output.

 

thank you for the help