{515} Inverter Welding Machine Repair Course / How To Repair Inverter IGBT Welding Machine

in this video {515} Inverter Welding Machine Repair Course / How To Repair #Inverter IGBT #Welding / welder #Machine / in last video number 514 (    • {514} Inverter Welding Machine Repair Cour...   ) i discussed Input Rectifier Circuit Explained & Troubleshooting. and this session i discussed full bridge / switching topology. it takes +330 vdc from dc rail, and drive from the pulse transformer which is driven the control card, this full bridge IGBTs will drive the power transfomer to produce output voltage, these output voltage will then rectified by full wave rectifier and will appear on output electrodes. control card will control and limit the duty cycle to limit the conduction of IGBTs to limit the current in the output terminal. the amount of flowing current in IGBTs and primary side of the transformer will translated into corresponding voltage by means of current transformer (CT). the output of the ct will then reach to control card, the control card will compare this CT voltage value and the required current value (in from of the tapped voltage by the current adjusting potentiometer on the front panel), and after comparing these both values the PWM controller UC3846 will adjust its duty cycle. circuit diagram and how to repair mma-200 or mma200 mma250, mma160 and troubleshoot inverter IGBT based welding maching. this china MMA-200T Inverter IGBT Welder Machine - Circuit Explained & Troubleshooting Part -1, is single phase 220 VAC operated. it have a bridge rectifier which rectifies the main ac voltage into dc voltage, which are connected to pair of dc capacitors through a relay contacts and in parallel 110 ohms ntc resistor. this nts protects from inrush current and upon receiving relay drive signal it switches the rectified voltage to capacitors so, the ntc is bypassed to get full current to drive igbt. after watching this video you will learn:- how to #repair #inverter #igbt #welding machine or welder 2. functional description of inverter igbt welder machine 3. how to troubleshoot arc welding machine 4. how to understand mma-200 circuit diagram and how it works 5. if welding machine does not work, how you will repair 6. if main circuit breaker trips off when power switch is turned on 7. over current OC LED light turns on To watch this video in Urdu / Hindi on @Haseeb Electronics Urdu    • #90 Inverter IGBT Welder Machine (Part -1)...   SMPS practical tutorial    • How SMPS Works || Understanding SMPS Switc...   SMPS tutorial and practical troubleshooting and fault finding    • Video   Youtube    / @haseebelectronics   https://www.dailymotion.com/haseebelect/ facebook   / haseebelect   Twitter   / haseebelect     / haseebelect   Types of Electrical and Eletronics Ccts    • Video   Test Diode With Multimeter    • Video   Check Resistance    • Video   Check Resistance    • Video      • Voltage divider circuit Practical   hInverter Welding Machine Repair Course,How To Repair Inverter IGBT Welding Machine,mma-200 inverter welder manual,inverter welder circuit board,dc inverter arc welder circuit diagram,inverter welder circuit diagram,how to repair igbt welding machine,inverter welding machine,inverter welder,mma-200 inverter welder circuit diagram,circuit breaker trips when power switch is turned ON,inverter welding machine how it works,inverter welding machine circuit diagram