Afternoon all. I'm stuck. I need to get 7.4v output from 12v supply to power my Canon 60D. I have a 7809 voltage regulator and the required capacitors, but this will only get my to a steady 9v. I know I'll need a resistor to get me close to 7.4v, but which one? My next question, well maybe just a confirmation, will it need to go after the last capacitor,  and before the output socket? Thanks peeps Daz