I need a current sensing circuit solution for my application. I have a power board which has 5v line and 24v line. Each lines are going to two different loads. In load 1 which has 5v input i have an internal thermal switch which shuts it off when temperature increases. So, I need some hardware solution(current sensing switch / transistor/op-amp etc) to sense the current on 5v line when load 1 shuts off (which would be 0 Amp) and accordingly turn off load 2. I need some cheap solution by which i mean which doesn't require to ad a new additional board. The 5v line draws 1.5 amps current and the 24v line draws 2 amps current.