Need help in designing variable current source

[mmnr00]

hye guys,

I'm looking to design a variable current source ranging from 2-50mA by the adjustment of a trimpot. LM741 amplifier, resistors, 10 V supply and a low noise transistor is given. Can anyone give me any idea how to start? I'm new to this forum and also to electronics. Hope you guys can help me.

Thanks in advance.

 

[karesz]

Hi,
You have more answer as you can use ...
https://www.google.ch/search?q=adju...&rls=org.mozilla:de:official&client=firefox-a
K.