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REVERSE
POLARITY
STRAIGHT
POLARITY
)NOLDERMACHINESABALANCEDCURRENTOUTPUTWAVEWASACHIEVEDUSINGALARGENUMBEROF
CAPACITORSINSERIESINTHEWELDINGCIRCUIT-ODERN4)'POWERSOURCESUSEELECTRONICSTOCREATE
ANDMAINTAINABALANCEDWAVEANDNOWMOST!#4)'POWERSOURCESPRODUCEASQUAREWAVE
CURRENTOUTPUT
!SQUAREWAVEPOWERSUPPLYCANCHANGETHECURRENTFROMELECTRODEPOSITIVETOELECTRODE
nNEGATIVEVERYQUICKLY4HISPRODUCESHIGHVOLTAGEASTHECURRENTSWITCHESPOLARITIESALLOWING
THEARCTORESTARTEASILY4HEARCCANBEMAINTAINEDWITHOUTTHEUSEOFHIGHFREQUENCYORANY
OTHERARCSTABILIZINGMETHODS
4HEOUTPUTCURRENTANDVOLTAGEARECONTROLLEDELECTRONICALLYSOTHEAMOUNTOFCURRENTELECTRODE
POSITIVEANDTHEAMOUNTOFCURRENTELECTRODENEGATIVECANBEADJUSTED4HISALLOWSTHEWELDER
TOADJUSTTHEAMOUNTOFCLEANINGANDTHEAMOUNTOFPENETRATION4HISISACHIEVEDELECTRONICALLY
BYADJUSTINGTHE!#BALANCECONTROLDIALONTHEWELDINGMACHINE-ORECURRENTmOWFROMTHE
STRAIGHTPOLARITYPRODUCESSTRONGERCURRENTmOWTOTHETUNGSTENANDISGOODFORREMOVINGTHE
OXIDIZEDSURFACEOFTHEWORKPIECE(OWEVERTOOMUCHCURRENTmOWCANDRIVETOOMUCHENERGY
TOTHETUNGSTENCAUSINGITTOOVERHEATANDMELTTHETUNGSTENELECTRODE
BALANCED SQUARE WAVE FORM
BALANCE ADJUSTED FOR MORE OXIDE CLEANSING ACTION /
HOTTER TUNGSTEN
BALANCE ADJUSTED FOR MORE PENETRATION / COOLER TUNGSTEN
CURRENT
CURRENT
CURRENT
STRAIGHT POLARITY
STRAIGHT POLARITY
STRAIGHT POLARITY
REVERSE POLARITY
REVERSE POLARITY
REVERSE POLARITY
CURRENT
AC TIG WELDING
EVEN BALANCE
LESS POSITIVE BALANCE
MORE POSITIVE BALANCE
Even penetration, stable arc
More penetration, faster welding,
more electrode capacity
Less penetration, oxide cleaning,
less electrode capacity
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MT200-AC/DC SQUARE WAVE TECHNOLOGY