How does SA 200 make DC power??

admin

Me any my buddy don't understand how a DC generator works.  We thought that all voltage is generated with AC and then rectified to DC.  But that's not true with the lincoln's right?
Reply:Simply put:The genrated power is passed through a rectifier bridge consisting of DC- and DC+ diodes that separate the AC into DC power.  Diodes only allow the AC in one direction + or -.
Reply:How is that different from my big 40?
Reply:How is that different from my big 40?
Reply:There are Alternators AC and there is Generators DC. Alternators can be rectified with diodes to create DC DC can be used with inverters to create AC
Reply:My question is how do you make DC without making AC first?  Lincoln claims that they have a true DC generator.  I'm very confused.  I know my big 40 makes 3 phase ac then gets rectified to DC. But a pipeliner is different than that, right?
Reply:Originally Posted by weldbaySimply put:The genrated power is passed through a rectifier bridge consisting of DC- and DC+ diodes that separate the AC into DC power.  Diodes only allow the AC in one direction + or -.
Reply:The sa must have a commutator in it?
Reply:Now I'm really going to throw you a curve ball.DSW's link almost explained the complete difference between an alternator and a generator but left out the part about the current flowing thru the generator armature is actually AC as its windings alternately pass thru the north and south magnetic fields.BUT, due to the positioning of the (+) and (-) brushes and how the armature windings are connected to the individual commutator bars, the resulting "timing" between the brushes and commutator bars causes a pure DC output.This critical timing is why Kaye and Bill Sellon strongly discourage jacking with it by "rolling the rack".MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:SA200's and all dc "generators" use a commutator to rectify the output to dc.  Without a commutator, they would just be alternators and a pulsating dc can then be produced by using rectifier diodes in various configurations and then smoothed out by inductors (coils) and capacitors."The reason we are here is that we are not all there"SA 200Idealarc TM 300 300MM 200MM 25130a SpoolgunPrecision Tig 375Invertec V350 ProSC-32 CS 12 Wire FeederOxweld/Purox O/AArcAirHypertherm Powermax 85LN25
Reply:I just found this youtube video and it's helping me a great deal to visualize what's actually happening.[ame]http://www.youtube.com/watch?v=OpL0joqJmqY&feature=related[/ame]at around 16:00 they talk about shunt would generators that produce CC.  Old videos are still the best demonstration.
Reply:So basically every generator welder available besides the Lincoln's are actually alternators.  Interesting stuff.