https://drive.google.com/open?id=1240GaEOLu_LdQFB7-aODWtbztO7Jl1po
if I divide this ckt into 3 steps
1 UC3843 IC
we successfully get a square wave with 60khz freq. with 45v amplitude when input is 45v.
2 MOSFET We have successfully switched MOSFET using UC3843 IC
3 Flyback Transformer and its feedback optocoupler, whenever we connect the primary MOSFET switching, goes(PWM OUTPUT GOES OFF/NO volt at output) OFF.
in short i'm able to generate 60 khz though UC3843, then swithing to mosfet, but now when i connect transformer with its feedback though Optocpuler is not working.
here all BOM & transformer info I'm using
https://drive.google.com/open?id=1b1ISLl1SsyqEkja_8CrCkjIptvSc85vX
Looking for expert to design a DC to DC flyback isolated power supply converter. The converter should have a 60V input and 5V 2A output, and be based on the UC3843 IC.
Can someone please help, even I can pay some amount for support
 
if I divide this ckt into 3 steps
1 UC3843 IC
we successfully get a square wave with 60khz freq. with 45v amplitude when input is 45v.
2 MOSFET We have successfully switched MOSFET using UC3843 IC
3 Flyback Transformer and its feedback optocoupler, whenever we connect the primary MOSFET switching, goes(PWM OUTPUT GOES OFF/NO volt at output) OFF.
in short i'm able to generate 60 khz though UC3843, then swithing to mosfet, but now when i connect transformer with its feedback though Optocpuler is not working.
here all BOM & transformer info I'm using
https://drive.google.com/open?id=1b1ISLl1SsyqEkja_8CrCkjIptvSc85vX
Looking for expert to design a DC to DC flyback isolated power supply converter. The converter should have a 60V input and 5V 2A output, and be based on the UC3843 IC.
Can someone please help, even I can pay some amount for support