Dear All, I am trying to make soft start circuit for halogen light using this circuit http://i187.photobucket.com/albums/x.../softstart.jpg reference: http://www.bikeforums.net/archive/in.../t-357675.html This is DC circuit with battery connected capacitor to p-mosfet which then connects to resistor and diode. I am trying to replace mosfet with BC 547 NPN transistor. Datasheet http://datasheet.octopart.com/BC547-...sheet-7074.pdf Can anyone advise me whether I can do this using the same circuit as shown in pic above or do i need to add more component for usinG NPN transistor safely. I am assuming it is 12 v battery? An advice greatly appreciated.