Posted by mEl on February 01, 2009 at 10:04:35 from (75.104.128.39):
In Reply to: positive ground posted by matt knoeck on February 01, 2009 at 09:03:54:
Don't want to get too technical on here as most will either get lost or plain not care but to expand on what JD said I quote the ARRL handbook. " most modern circuits employ a chassis or ground plane or bus as a common conductor, this practice reduces the wiring or printed circuitry required and simplifies the schematic diagram. When the negative terminal of the power source is connected to this "ground" system, elecrtons flow from the negative terminal through the ground system and through the circuit elements to the positive terminal. While this is certainly a correct description of the action, it is more convenient to think of the common conductor as the "return" leg. To accomodate this reasoning, electrical engineers have adopted a positive to minus convention. This convention is adhered to in most technical literature. The arrows in semiconductor schematic symbols point in the direction of conventional current and away from actual electron flow" There is much more but I hunt and peck and most won't care anyway as long as the starter works when they push the button. No one seems to care which way the electrons are going. The hole theory is a whole other matter as my understanding is that it has to do with current flow through a semiconductor.. mEl KC3EH
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