2PAC Mafia
Member
Hi,
I have this inverter which the customer told me was failing since somebody connected a drill machine on it. He told me the output was more than 300Vac but when I connected the scope I see 310Vac peak to peak, 120Vac RMS and 50Hz frequency.
I have checked all components, diodes and mosfets, some capacitors and chokes, everything seems good. The only thing I see strange are typical horizontal electrolytic capacitors which have a little high D value and also ESR but they are in control circuit and I don´t see any overload at the DC power, I think it has more to do with some coil... Any ideas?
I have this inverter which the customer told me was failing since somebody connected a drill machine on it. He told me the output was more than 300Vac but when I connected the scope I see 310Vac peak to peak, 120Vac RMS and 50Hz frequency.
I have checked all components, diodes and mosfets, some capacitors and chokes, everything seems good. The only thing I see strange are typical horizontal electrolytic capacitors which have a little high D value and also ESR but they are in control circuit and I don´t see any overload at the DC power, I think it has more to do with some coil... Any ideas?