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problem with viper37LD

Question asked by PINI BITON on Feb 29, 2016
Latest reply on Mar 6, 2016 by PINI BITON
i have a problem
i build ac dc converter based on flyback and i get in outpout sawtooth with rippel 1v 
i should get stable voltage in outpout
input: 110-230Vac,outpot 12v 1A
i used chip viper37LD and isolated feedback
why i get 1v rippel  in outpout? and how is solve it ?