Forums | MacLife

Okay, no activity, but I have a safety/electronics question. If I take a +5v line from the PSU, then add a 0.166ohm resistor to that, the effective voltage of the line would be 2v? (the PSU runs the 5v at 12 amps) If I then take this 2v line and attach it to the -12v line, then attach both lines to the -10v pin on the iMac, would this work out? My physics teacher thinks I'll blow up the power supply, but he hedges this with he doesn't know much about EE. My revised question is, is this safe and correct?

Sorry, I was a bit tired when I posted the reply.  The iMac video connector has a pin that is labelled for -10v. To provide this,  a poster on Applefritter suggested using the -12v source on an ATX power supply. I was wondering how he proposed to do this. After discussing my problem (getting -10v from -12v) with my friends, or suggested changing a positive voltage (+5v in this case) to +2v using a resistor, then connect the -12v wire and the now +2v wire to get -10v. I was wondering if this is reasonably safe, as my physics teacher looked at the idea and thought it would blow something up.