請教:如何提高手機充電器的效率
我做過一個充電器,這4.2V500mA的,可效率指有35%這樣,次級Diode temperature about 110.
誰能告訴我,問題可能出現(xiàn)在哪?
請教:如何提高手機充電器的效率
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@jacki_wang
Theleakageinductanceshouldbeaproblem.ButIdon'tthinkitistheall,ifyoudonotcare,uploadtheschematicforreference.whatistheinputvoltage?universal?
For efficience
input voltage is universal,90-264VAc.I have designed other type of mobile phone charger which is based on Viper 12 else before,but the efficience reach to about 55%.I think the efficience is so low now.The major difference betwwen before and now is the transformer manufacture process.For wiring,i took the sandwich process before,but in this incidence i take the order process.Except it,i could not think out what is the reason.Could you help me?Appreciated.
input voltage is universal,90-264VAc.I have designed other type of mobile phone charger which is based on Viper 12 else before,but the efficience reach to about 55%.I think the efficience is so low now.The major difference betwwen before and now is the transformer manufacture process.For wiring,i took the sandwich process before,but in this incidence i take the order process.Except it,i could not think out what is the reason.Could you help me?Appreciated.
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@sunnile
Forefficienceinputvoltageisuniversal,90-264VAc.IhavedesignedothertypeofmobilephonechargerwhichisbasedonViper12elsebefore,buttheefficiencereachtoabout55%.Ithinktheefficienceissolownow.Themajordifferencebetwwenbeforeandnowisthetransformermanufactureprocess.Forwiring,itookthesandwichprocessbefore,butinthisincidenceitaketheorderprocess.Exceptit,icouldnotthinkoutwhatisthereason.Couldyouhelpme?Appreciated.
I had not idea on using the viper 12
I don't have the datasheet of this guy, but the leakage inductance should ahve effect on the efficiency, if you only have the X'FMR deference on this two project,sure the sandwich can reduce much leakage inductance,why not try on the breadboard? you can find out the result very easy.
I don't have the datasheet of this guy, but the leakage inductance should ahve effect on the efficiency, if you only have the X'FMR deference on this two project,sure the sandwich can reduce much leakage inductance,why not try on the breadboard? you can find out the result very easy.
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@jacki_wang
Ihadnot ideaonusingtheviper12Idon'thavethedatasheetofthisguy,buttheleakageinductanceshouldahveeffectontheefficiency,ifyouonlyhavetheX'FMRdeferenceonthistwoproject,surethesandwichcanreducemuchleakageinductance,whynottryonthebreadboard?youcanfindouttheresultveryeasy.
regret
now i have not some necessary material.i want to get some sugestion in theory.Have you met such probelem?and what measure did you take?appreciated.
now i have not some necessary material.i want to get some sugestion in theory.Have you met such probelem?and what measure did you take?appreciated.
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