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energy

  1. New Member Introductions
    Immediate need for helper with business writing skill and enthusiasm for alternative energy. I have several potential investors interested in supporting my startup company. I'm just lacking the writing skill and want this to be a successful presentation. I'm available to teleconference or skype...
  2. Technical Discussion
    The concepts of magnetics and electromagnetism are fundamental to the understanding of motors, transformers, and buck or boost converters. I am trying to get a better handle on these concepts, and explain how such things work in a way that does not involve very much higher math. There are some...
  3. Batteries and Charging
    In a current thread on battery pack problems I noted that Lithium cells may have a temperature coefficient for the charging and open cell voltage, but also there may be effects from internal and external resistance. So I found a thread where a chart was supplied with internal resistance as a...
  4. EV News
    This was just posted on the sci.electronics.design newsgroup. It was big news a year or two back but seemed to be a flash in the pan. However this recent development looks promising, and may well be the "Holy Grail" that enables safe, clean, cheap energy in the near future...
  5. Batteries and Charging
    So, I was recently told that the weight of a lead battery determines how much energy it can store. I'm starting to think that they just meant that as an approximation because I always thought design could have an effect as well. Lead-Acid has become better from 50 years ago right? Also, if...
  6. Blog
    Big news! U.S. presidential candidates Barak Obama and John McCain are talking about EVs. Finally, American politicians, corporate executives and grassroots advocates all seem to agree that powering cars from clean, affordable and domestic electricity makes sense. However, politicians have...
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