diy power supply

hi
i was asking myself the same question
and after searching i have found this excellent video series

this is part 1
http://www.youtube.com/watch?v=CIGjActDeoM&feature=player_detailpage

this power supply can be built using op amps and tip transistors or ready stable v regulators it has current and voltage adjusting and can be adjusted also using software from a pic or atmel ....etc

how can i add a current regulator to this circuit

i am looking for a schematic for a power supply that will be able to provide 0 - 25v 5A output with adjustable voltage and current.

Watch the video referenced above. It has a great section on adding a current regulator!

Much easier than this look this up
MSK 5012 voltage regulator
http://www.mskennedy.com/client_images/catalog19680/pages/files/5012ri.pdf

Hope that helps you

its awesome but i dont know how would it be used to adjust current

also i think it is very expensive
and i dont know wether i would find it here in Egypt or not but still a very good solution for voltage regulator that can sustain high current

Here try this instead I think you will find this more to your liking

http://hmin.tripod.com/als/andysm/pages/analogs3.html

Hope this helps you Very good power supply design
Manson.hk produce one similar in fact not to far off this design

Model numbers ep-920 ep-925 with a few minor changes to the circuit However the circuit is to all intensive purposes the same as the circuit on tripod and also The ARRL handbook Chapter 27 page 9

Maplin electronics and CPC also supply the same power supply under a different badge but the circuitry is exactly the same as does Conrad electronics also exactly the same

Strange that isnt it

Thats what happens when you ask the rest of the world to MNFR for you uhm you lose your designs "Wont say anymore !"

http://manson.com.hk/

The ARRL Handbook for radio amatuer's produces this design , publication 1988 , Editor Mark J Wilson , call sign AA2Z although current limiting adjustment is not biult in , but limits at 10amps

Mark

Hope this helps you

www.harrington.force9.co.uk