[0-30 VDC Stabilized Power Supply 0.002-3 A]

On 2/15/2016 at 9:14 AM, Mayoral said:

Thank you very much! I see what you mean, it is not only changing few component.... I have almost every component I may make it next new project ! 

Since I was curious I was digging the forums and the web an I came across a very similar schematics. In this one, Q1, R13 and R14 have been included back to "mitigate transient surge issue". Since you look pretty knowledgeable (and my knowledge that does not go that far), do you have an opinion in this incorporation? Will it affect the overall performance of the supply?

Thanks in advance again for your time and comments.

Sir, Is it ok if I use a 30V from the secondary output of a transformer or It must be a 24V secondary output.  Sorry I am new in understanding what a 28VAC transformer means.