^Sir,

^{we made a 30w led driver using der286 . We followed every thing as per}

^{der286 except the flyback transformer  and link switch. Link switch we}

^{used lnk409 instead of  lnk419 and transformer  we used EI 28 as per PI}

^{expert spreadsheet design. Also please note that we didn’t use OVP}

^{circuit.
We get output current 600-750ma for an input variation of 90to 245v.}

^{Output current is increasing as input increases. We changed the}

^{feedback resistor value to 98k then current starts regulate at 660-}

^{700ma range for input variation 100-240v. During this regulation Ifb}

^{varies from 190uA to 230uA. Also bias voltage varies from 23.8 – 24.8v}

^{for an input variation 100-245v.
Please tell me what is wrong with my circuit.}

^thanks

^Stalin