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Any one knows whereabouts of this Inverter PCB?

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pranam77

pranam77

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This PCB of 600Va quazi sine inverter is manufactured somewhere in Kerala (India) and is widely used as an replacement for old inverters which are bulkier. The PCB is available in local markets for just 600INR or 12USD. The only tricky thing is its having a PIC12c508 which controls the charging process. The battery is charged by connecting a 33Mfd Motor capacitor externally to the AC inputs. Uses just 3 major semiconductors SG3525 as oscillator and will too monitor the AC line and swicth on the oscillator, PIC12c508 for charging process, and LM339 for hi-low volatge monitoring. 3 + 3 IGBts P55NF06.
Any one knows and origin or manufacturer of this board, please put the details here.
Cheers
 

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