Linked by David Adams on Mon 26th Oct 2009 19:32 UTC
The "wall wart" is one of humanity's worst inventions (not counting all of the inventions that are actually intended to kill and maim each other, I'll admit). AC-plug power supplies are a cheap workaround to various engineering, economic, and regulatory problems that manufacturers face, and they solve those problems by pushing them off onto end users. So what can we do about it? OSNews takes a look at an ingenious workaround to the Wall Wart problem, and some hopeful trends that might make them a thing of the past.
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Member since:2005-09-21
Not to mention DC is pretty dangerous if you do god forbid get shocked by it, AC pulses and many people get kicked back by it, DC just freezes you up, its always delivering and only .02 amps can stop a weak heart if delivered at the wrong time. Ive seen someone at work get seriously injured working on a dc motor he didn't know was live, the motor was smaller than most household fans, and ran off of 12vdc.
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Member since:
2007-01-13
It wouldn't be feasible. Have a look at the wiring in your car to see how complicated and expensive it would be. Lower voltage means much higher amperage. This requires very thick wiring and relays on all switches to prevent arcing or contact melting. An electric kettle or toaster would need a cable as thick as a garden hose and would need to be hard-wired.