Kemppi MASTERTIG AC/DC 2500W - Page 13

Operation principle
T001
R001
T003
V4
V6
TIG
V5
U
G5
The main transformer T001 secondary voltages are rectified with a full wave rectifier V4 and
the current type (DC+, DC- or AC) is chosen by IGBTs V5 and V6. Secondary circuit current is
measured by shunt resistor R001.
When the current type is DC+, is IGBT V5 conductive.
T001
R001
T003
V4
V6
TIG
V5
U
G6
When current type is DC-, is IGBT V6 conductive.
13