Hi guys, I have found in the old forum a guy that had the same problem as mine: control a device that is 0-10V controlled with the 0-5V from the Arduino. One of the users answered this solution, but was not sure about the resistors values :
Assuming my device needs 200mA and using a 2n2222 transistor (beta=300), I found that R1 needs to be of 8.3k Ohm. Now I am stuck for the value of R2. Can anyone give some help?
Thank you (and sorry if I made some spelling mistakes, english is my second language)