As you have asked me, I will explain in better words my problem.
I’m working on real-time bench. I have an algorithm on my laptop and I interact with hardware through a calculator supporting real-time testing.
My main goal is to test things and see how they work in different situations.
I have a tank filled with a liquid. I have a heater which is a resistance that drains maximum 7.08A at 12V. The ambient temperature and the heating temperature , in my algorithm, are inputs or outputs for 2 other less powerful heaters and a pump. The idea being that my pump, by varying its speed, changes other variables (like temperature, pressure or level in the tank or in the line) and those variables change the input of the heater and how it behaves. Or by changing some sensor signals in my software, making the heater behave differently. That’s what I meant by “varying a lot”.
Now, my problem is that the heater that I want drive drains more current and is more powerful than the output of my calculator can afford. My PWM output pin can give 5A and 12V signal which is not enough for my heater. So I thought about a DC power supply which is able to give the heater the right amount of power, that takes the PWM outputted by my calculator and drives its own DC voltage output with it to bear with the heater voltage or current variations.
Finally, my question is : Is this idea feasible ? Can I solve my problem with a different way ?
Thank you for your time and have a nice day.
Landau