hi i am designing a variable power supply from 220AC-(0-200)DC
i used a rectifier to make 200v dc then i use dc chopper connecting mosfet and inductor and a capacitor and then i had a problem for controlling the voltage i want to control it using pwm modulation method
i search in the net how to make it
i want to use 555 timer or pic16f84a but it didn't work so someone please help me how to make my design correct.
in the attachment there is the design in proteus
i used a rectifier to make 200v dc then i use dc chopper connecting mosfet and inductor and a capacitor and then i had a problem for controlling the voltage i want to control it using pwm modulation method
i search in the net how to make it
i want to use 555 timer or pic16f84a but it didn't work so someone please help me how to make my design correct.
in the attachment there is the design in proteus