I am teaching a physics class at the local community college. They purchased a magnetics experiment (current balance) that requires a variable 5 amp supply to the equipment. The one the experiment maufacturer recommends is their own 25V, 5A supply, but they charge $280 each for them and funds in the department are tight. The college has several variable power supplies, but none that provide the amperage required. They do have a few 6V 5A supplies, but they are not variable and I need to be able to vary the current input into this experiment.
I was thinking of building my own modifier for the 6V/5A supply that would make it variable, but I'm not sure how to go about it. I'm thinking I need a rheostat, but I want to make sure that will do the job and if so, that I get one with the proper rating.
Thanks-Susan
I was thinking of building my own modifier for the 6V/5A supply that would make it variable, but I'm not sure how to go about it. I'm thinking I need a rheostat, but I want to make sure that will do the job and if so, that I get one with the proper rating.
Thanks-Susan