Re: + or - ground whats the difference?

Posted by Jon H on January 25, 2005 at 08:56:09 from (69.26.18.86):

In Reply to: Re: + or - ground whats the difference? posted by jdemaris on January 25, 2005 at 06:41:13:

There is another factor to consider concerning coil polarity. Electricity flows from a hot electrode to a cooler electrode very easily,while it can take 50% higher voltage to get the same flow from a cool electrode to a hot one. A sparkplug is designed so the center electrode and insulator runs hot enough to burn off any combustion deposits that would cause a short and foul the plug. The center electrode runs much hotter than the side electrode for this reason. Spark has a much harder time jumping from the cooler side electrode to the hot center plug electrode than it does jumping from center to side,so coil polarity/spark flow direction is very important.
This effect of electricity flowing easily from a hot to a cool electrode,but not the reverse is so pronounced that it is the basis for the working of a radio rectifier tube or an old tungar/tunger bulb battery charger which convert AC to DC.

Follow Ups:

• Re: + or - ground whats the difference? dr.sportster 13:47:02 01/25/05 (7)
  • Re: + or - ground whats the difference? dr.sportster 13:56:35 01/25/05 (6)
    • Re: + or - ground whats the difference? Jon H 15:16:47 01/25/05 (0)
    • Re: + or - ground whats the difference? dr.sportster 14:06:13 01/25/05 (4)
      • Re: + or - ground whats the difference? Jon H 14:24:37 01/25/05 (3)
        • Re: + or - ground whats the difference? dr.sportster 17:16:04 01/25/05 (2)
          • Re: + or - ground whats the difference? Jon H 20:52:49 01/25/05 (1)
            • Re: + or - ground whats the difference? dr.sportster 13:35:10 01/26/05 (0)
• Re: + or - ground whats the difference? jdemaris 09:37:21 01/25/05 (2)
  • Re: + or - ground whats the difference? Bob 11:23:23 01/25/05 (1)
    • Re: + or - ground whats the difference? Jon H 14:07:03 01/25/05 (0)

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