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  #11  
Old 06-29-2006, 12:01 AM
ventureline ventureline is offline
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Well, Lincolns chopper breaks up the erratic DC output, and smoothed out to resemble a pure DC signal. Quite an ingenious process. This technology is patented.

Miller would have to go around this process somehow, perhaps breakup the ac signal comming off the 3 phase alternator and smooth it out before it entered the recifier portion

The ESAB 260 has a single small control board referencing a current transducer,and a couple of other sensors. by no means is there any type of component that breaks apart, and reassembles the output. It does have a prettly large stabilizer in it though. This makes it weld rather clean and smooth.

The Hypertherm Chopper is not the output, it is just a name they use for the igbt switching circuits for frequency buildup in primary mode.
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  #12  
Old 06-29-2006, 12:22 AM
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Scott V Scott V is offline
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Here is a bit more from a few years ago.

http://www.chaski.org/homemachinist/...hlight=chopper
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Old 06-29-2006, 10:25 AM
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houlibar houlibar is offline
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Thanks for that link, Scott. It's a good read. Answered a lot of the questions I have been wondering about.
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