I'm currently trying to heat a wire to a certain temperature and tests showed that the amperage needed is in the range of 3-4 A.
However, I'm having a problem with how to supply such current to the wire.
I have an Arduino Nano with a max current of 40mA, and a weird battery with 7.4V and 1000mAh. I'm not sure how the battery works but directly connecting it to the wire instantly snaps it, so I need to limit the current somehow.
I was trying to make a simple circuit with a resistance and a transistor (as a switch. Maybe a SS Relay instead?) but when I was browsing for transistors they all limit the Collector current and I'm not sure how much the battery will give. The resistances available to me will fry instantly with a simple 1A current.
I'm not sure what to do, I'm seriously considering buying a new battery, but that comes at a cost.
Maybe I'm just dumb and it isn't possible with this battery
Tl;Dr: Have a battery with "unlimited" current that will fry everything that I have. Need to reduce it while keeping a ~4A current