Just after some advice really (or at least some reassurance) that my project idea will work. I’m building a heated aluminium plate using a 330 ohm, 50W power resistor (like these).
The power supply I will be using is a DC 24V, 10A, 240W max.
I will also be using an N-type MOSFET that is rated for 60V and 100A (It’s a TI CSD18534KCS) which will be heatsinked.
In addition to the heating elements I will also be using 4 peltiers in series (rated for 3.7A and 37.4W max), again controlled by the same MOSFET on the bed. (These will be in either on state or off state only).
I know peltiers can be used with say an H bridge to reverse the current to flip hot and cold sides, however for the application I have in mind, I reckon having separate hot/ cold elements is more suitable.
All of this will be controlled via Labview LINX, using the input of 5 thermistors.
Please find attached the circuit diagram of how I’ll wire everything up (I think my FET’s are correct but new to all this so apologies if I’ve got them connected wrong!)
If anyone has any suggestions I’m keen to hear. Also if anyone has any suggestions of any safeties I could implement (and where/ how to wire them up) I’d be grateful as I’m aware this could be a fire risk given the high current/ potential power!