On power ON, the AC current passes through the fuse and the filter, this filter out any noise or spikes. After the filter passes through the rectifier which converts AC to DC. Next to rectifier it passes through the transformer and provides a constant voltage to the charger. Past of the winding from transformer is taken TOP switch to generate supply. The micro controller reads the input current voltage input coming from the batter and Vref generated in the circuit. The controller generates the current reference voltage to current loop circuit by reading the inputs and adjusting the PWM in the controller according to the inputs taken.
The project involves both hardware and software. The primary component used in the project i.e., PIC16F73 Microcontroller. has to be studied and tested. The other components are available in discrete. These components are to be assembled on the PCB board and then proper connections are to be made. Coded microcontroller i.e., PIC16F73 has to be used in order to perform the charging operation by connecting the PCB module to the system using RS-232 cable.
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