/diy/ - Do It Yourself

>>1249646
i included the parasitics relevant to switching. there's some more small resistances to account for there but you can add those up. what are you putting onto a pcb, the fet and some control circuitry? don't put the diode on there. the rest will be fine as long as the wires going to the coil and battery are soldered directly adjacent to its leads and the traces are tinned.