Help with controller circuit for galvanic etching machine? How can I eliminate the halogen lamp from the circuit? Answered
I want to put together an electroetching rig (as detailed here), and I already have a battery charger, but I need to make the controller (diagram attached).
My question is: Is there a better solution for the circuit than having an 12 volt halogen lamp wired in? That just seems really clunky to me, and my gut tells me there's a better solution that is not "go buy a laboratory power supply". I have nothing against old-school, but this looks positively prehistoric. Anybody?