OK so I am using MOSFETs to switch on and off short pieces of ni-chrome wire. I am using a 5A 12Vdc power supply. I have one end of resistance wire (about .6ohm) connected to +12 the other end connected to drain. The source is then grounded. I will eventually be using a 12v decoder (VDD will be the same 12v supply) but for now I am just connecting the gate to 12v via a 10k resistor and then grounding the gate to shut it off. This all works fine and dandy with a indicator light or in a simulation but once I hook up the resistance wire the mosfet gets hotter than the wire!! Whats wrong!!!
Also, I'm having a hard time understanding the equation for this but what is the opinion on the size of smoothing cap(s) for the above mention supply. 12v 5A
Thanks!
Also, I'm having a hard time understanding the equation for this but what is the opinion on the size of smoothing cap(s) for the above mention supply. 12v 5A
Thanks!