Skip to main content

View Diary: The Jobs agenda (185 comments)

Comment Preferences

  •  Wouldn't we then need DC to DC converters (1+ / 0-)
    Recommended by:
    JesseCW

    to account for the different voltage and current needs of different appliances? Not to mention that the voltage and current needed for long-distance transmission would be much different from what appliances use. I don't see the advantage.

    "Soylent Green is a corporation!"--Mitt Romney. Eat the rich.

    by ubertar on Sun Oct 09, 2011 at 06:03:52 PM PDT

    [ Parent ]

    •  From my understanding... (0+ / 0-)

      ... simple voltage stepdowns or stepups are a far simpler process than the hoops we have to jump through every time we hook one of our many DC powered items (or DC suppliers, like solar panels) into the AC system that's delivered to our residences.

      We live in a DC world; when Westinghouse got behind AC as the standard here there were no effective DC electrical motors, but even that's no longer the case (and then some).

      Hybrid cars, all electric cars, hell, damn near everything I can think of as far as household electrical or electronic products is DC powered, other than some of the motors in the appliances around my house.  But even those could be DC, I've not gotten into my washing machine to really check.  Probably AC.  

      "I believe in a government which acts, which exercises its full powers and full responsibilities. Government is an art and a precious obligation..." JFK

      by Rick Aucoin on Sun Oct 09, 2011 at 07:18:06 PM PDT

      [ Parent ]

      •  converting AC to DC is fairly simple. (0+ / 0-)

        You just need to rectify the wave to flip the phase of the negative half of the wave. This can be done passively. Converting DC to AC is tricky, and requires additional energy.

        "Soylent Green is a corporation!"--Mitt Romney. Eat the rich.

        by ubertar on Mon Oct 10, 2011 at 05:23:08 AM PDT

        [ Parent ]

      •  I think your second paragraph is off... (0+ / 0-)

        IIRC, DC motors were around longer than AC motors. When Tesla made the first AC motor, people thought it couldn't be done... they thought the motor would keep stopping and reversing itself every 60 cycles.

        "Soylent Green is a corporation!"--Mitt Romney. Eat the rich.

        by ubertar on Mon Oct 10, 2011 at 05:25:58 AM PDT

        [ Parent ]

        •  You're quite right. (0+ / 0-)

          That's what I get for posting on so little sleep.  :)  Thanks.

          "I believe in a government which acts, which exercises its full powers and full responsibilities. Government is an art and a precious obligation..." JFK

          by Rick Aucoin on Mon Oct 10, 2011 at 01:30:02 PM PDT

          [ Parent ]

Subscribe or Donate to support Daily Kos.

Click here for the mobile view of the site