Digital Power Supply, Interface Arduino-PC

[r_guillermo0]

hi i want to make a Digital Power Supply with uncommon specs, for example,
the power supply has to be adjustable 0-15 v, wiht pc control, interface Arduino, my problem is the current, the power supply has to control 10 amp.
if you can help me with a schematic i would appreciate.
i am not shure where i have to put the PWM.?
my email is r_guillermo0@yahoo.com.mx

[free_electron]

Design the regulator system first. Slap on the hardwhino later ...
Have you figured out yet what regulator topology you will use ? linear ? pwm fiollowed by linear ?
Work on that part first.
what about current limitation ?

From the way you wask your question i fear you may have experience with an arduino only... and that is not exactly 'electronics'.... which is what you will need to design a decent supply.

[mariush]

This smells like one of those "please email me the codes" threads.

If you want to do it smps style, then I'd suggest getting a book about smps power supplies. A book like Switching Power Supply Design, 3rd Ed is well worth the money.

A half-bridge design or something equally simple can be done fast and cheap.

If you want to just do something fast and without worrying about efficiency, get a nice 2x10-12v x 12A transformer, a bridge rectifier, a bunch of big capacitors and you have either 10-12v DC @ 10-12A or 20-24v @ 12A... switch between them with a relay
Then regulate to the desired voltage by using something like 2 linked LT1083 .. each can do 7.5A by itself  but they can be made to work together (see page 14) . One or a couple of i2c 1kohm digital potentiometers instead of that 2k adjustable resistor solves the adjusting by arduino...

But you'll need a big heatsink with a nice fan to cool it down when it dissipates 50-90 watts into the heatsink.

[Bored@Work]

Arduino? Sure. Why do you kids think that slapping an Arduino onto something makes it a new and unique design? Somewhere I have a 40 year old application note describing how to build a digitaly adjustable power supply. Complete with isolation (of a parallel bus ...). Nothing new under the sun.

[r_guillermo0]

your reviews are right, i know only the basics in PWM, i will see in the commercial shops about the  LT1083.
thanks.