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Re: 6 volt versus12 volt
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Posted by Dave G on September 04, 2001 at 19:57:02 from (158.252.165.103):
In Reply to: 6 volt versus12 volt posted by Marv on September 03, 2001 at 17:48:47:
6 Volts was just a bad idea! Sure a well tuned tractor might start on 6 V, but it is marginal and not robust. That is why we are at 12V and that will only increase. Ohm's Law says that Voltage drop = Current X Resistance. This means that for a 6 V system you will get twice the voltage drop across every resistance (wire, connection, etc.) because a 6V system requires twice the current as a 12V system (and you only have 6 volts to start with so how much do you want to loose - keep that electrical system perfect). Remember, Power = Current X Voltage, hence 6V draws twice the current. This is also why AC power to your house is transmitted at very high voltage and then transformed down at your house - to minimize losses.
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