Incorrect drive voltage in Mosfet

• Inverter Basics
• Inverter Issues

---

• Faulty 80202 or 83202 IC in some inverters PCB or faulty resistor or diode associated with it

Luminous Ecowatt

Problem	Incorrect drive in mosfet
Fault	Print cut problem at Q20 location transistor
Solution	checking microcontroller pins. OK checking tranistors at Q20 location. Faulty voltage Fault confirmation Print created
Parts used	No parts
Comments	Transistor circuit diagram from MC

Luminous Ecowatt Neo

Problem	No drive in one section of mosfet
Fault
Solution	Relay burnt. Changed. Transistor, resistor, PF checked of Mosfet found Ok. But No drive MC pins are not generating drive signals. Changed MC. Problem solved.
Parts used	Relay Luminous Ecowatt Neo MC.
Comments	In this PCB due to lack of drive in one section. The inverter goes to the overload mode. So to check the drive you have to switch on the PCB each time to check the drive in every mosfet.