User Manual

ionTig 200 Pulse PFC
Copyright © Mundaka Welding & Gases, Inc.
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MMA——Manual Metal Arc welding
PWM——Pulse-Width Modulation
IGBT——Insulation Gate Bipolar Transistor
TIG——Tungsten Insert Gas welding
2.2 Working Principle
The working principle of TP- series welding machines is shown as the following figure. Single phase
work frequency AC 220V (50 Hz) is rectified into DC (about 380V), then is converted to medium
frequency AC (about 20KHz) by inverter device (IGBT), after reducing voltage by medium transformer
(the main transformer) and rectifying by medium frequency rectifier (fast recovery diode), and is
outputted by inductance filtering. The circuit adopts current feedback control technology to insure current
output stably. Meanwhile, the welding current parameter can be adjusted continuously and sleeplessly to
meet with the requirements of welding craft.
Rectify Inverter
Medium
frequency
transformer
Medium
frequency
rectify
Hall device
Current positive-
feedback control
DC
AC DCAC DC
380V,50HZ
Three-phases
AC
Single-Phase AC