0-5V programmable power suplly

[Advark]

Hi, i have a course project. I have to built a 0-5V programmable power suplly using a DAC that gives a 1A as maximun current output.

The range is given using switchs (DIP switch), for example.

00h -> 0V
FFh -> 5V

The have implemented the DAC, but i don't know the to design the buffer. I should use a voltage folower. Which transistor should i use?

I hope someone could helped me.

 

[IanP]

Google for "power opamp" ..

An (power) opamp can be a better alternative than messing around with transistors.
Here is one example:
**broken link removed**

Rgds,
IanP

 

[Advark]

Thanks, should i use the "unity gain" configuration. One more thing if i choose using transistor could you give me an example.

Thanks

Regards