I need to drive a peltier module (resistive load, 12v, around 5-6A) with an arduino nano. I have a lot of transistors laying around and I would like to use them in this project.
I initially tought I could use a 2N3055 for the peltier current handling and then a tip121 for driving 500ma at the gate of the 2N3055. The problem is that I don't know how to place them since an npn transistor needs the load at the collector.
Would it be better to use an pnp in place of the tip121?
Thank you for your help