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Farm Machinery
Classic Machinery
Dexta charging light
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<blockquote data-quote="TheTallGuy" data-source="post: 5879656" data-attributes="member: 9121"><p>It was largely a hangover from the early days of telegraph where the standard was to have positive earth/negative signal as it was easier to manage the galvanic corrosion on the earth circuit that way around. It wasn't until silicon diodes & transistors became viable & cheap that negative chassis became the standard system & some early alternators were positive chassis! </p><p></p><p>Strictly speaking, cars & tractors don't have "earth"/"ground" - it's "chassis" as there's no direct connection to the general mass of earth.</p></blockquote><p></p>
[QUOTE="TheTallGuy, post: 5879656, member: 9121"] It was largely a hangover from the early days of telegraph where the standard was to have positive earth/negative signal as it was easier to manage the galvanic corrosion on the earth circuit that way around. It wasn't until silicon diodes & transistors became viable & cheap that negative chassis became the standard system & some early alternators were positive chassis! Strictly speaking, cars & tractors don't have "earth"/"ground" - it's "chassis" as there's no direct connection to the general mass of earth. [/QUOTE]
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Dexta charging light
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