i built a ignition coil driver based on 555 and 2n3055.
id like to swap out for a mosfet because of lower internal resistance, but unsure how to calculate the output resistor. i tried a irfp250 but got no output at all. do i have to put a pull down resistor across the gate and source? and could you tell me what the pull down resistor does? (just saw that on another site)TY
id like to swap out for a mosfet because of lower internal resistance, but unsure how to calculate the output resistor. i tried a irfp250 but got no output at all. do i have to put a pull down resistor across the gate and source? and could you tell me what the pull down resistor does? (just saw that on another site)TY