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The Water Cooler
General Discussion
I have a question about amps & voltage
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<blockquote data-quote="dennishoddy" data-source="post: 2908629" data-attributes="member: 5412"><p>it takes voltage to drive amps. You can put your hands across a 12 volt battery, that has 300 amps or so and not feel a thing. The body's internal resistance overcomes the ability of the voltage to push the amps through it.</p><p>The electron beam welder I worked on early in my career used 60,000 volts with 500 milliamps to weld a drill bit that was 1 1/2" thick with 100% penetration. The beam that went through was absorbed in a solid copper block inside the drill bit because solid copper has so many free electrons, and doesn't have a problem absorbing more. Welded inside of a vacuum chamber that was in the 35 micro-torr range.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 2908629, member: 5412"] it takes voltage to drive amps. You can put your hands across a 12 volt battery, that has 300 amps or so and not feel a thing. The body's internal resistance overcomes the ability of the voltage to push the amps through it. The electron beam welder I worked on early in my career used 60,000 volts with 500 milliamps to weld a drill bit that was 1 1/2" thick with 100% penetration. The beam that went through was absorbed in a solid copper block inside the drill bit because solid copper has so many free electrons, and doesn't have a problem absorbing more. Welded inside of a vacuum chamber that was in the 35 micro-torr range. [/QUOTE]
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