Yard Master & Research
I have been using my banana clips less and using a nine volt battery more for testing. I get sloppy with leads and find my battery heats up quickly. So I came up with two stiff wire loops to use with the clips. For fun I added a string light plug to a 12 volt wall wart. Now I have 3 amp protection. The wart is only .2 amps so I think I am safe. The mounting is not that great. I may just go with some nails in a block of wood. With a plug attached I can switch wart voltages too. It's just an idea that I wanted to try. Plus the whole set up is smaller than a conventional transformer. More room on the work bench. Though not variable.