99久久全国免费观看_国产一区二区三区四区五区VM_久久www人成免费看片中文_国产高清在线a视频大全_深夜福利www_日韩一级成人av

  • 回復
  • 收藏
  • 點贊
  • 分享
  • 發新帖

請教:如何提高手機充電器的效率

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,問題可能出現在哪?
全部回復(18)
正序查看
倒序查看
jacki_wang
LV.11
2
2003-09-19 22:54
用什么線路, 輸出用什么diode?
有你這樣問的嗎, 沒頭沒腦的,神仙也不會分析.
0
回復
cxzcjz
LV.2
3
2003-09-20 12:49
有問題
電路及器件選擇肯定有問題
0
回復
sunnile
LV.5
4
2003-09-20 22:12
@jacki_wang
用什么線路,輸出用什么diode?有你這樣問的嗎,沒頭沒腦的,神仙也不會分析.
零件
用的是Viper12的IC,secondary diode is SB260.I think,is all caused by leak inductor?
0
回復
jacki_wang
LV.11
5
2003-09-20 22:59
@sunnile
零件用的是Viper12的IC,secondarydiodeisSB260.Ithink,isallcausedbyleakinductor?
The leakage inductance should be a problem.
But I don't think it is the all, if you do not care, upload the schematic for reference.what is the input voltage? universal?
0
回復
sunnile
LV.5
6
2003-09-21 00:16
@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.
0
回復
jacki_wang
LV.11
7
2003-09-21 00:26
@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.
0
回復
sunnile
LV.5
8
2003-09-21 00:51
@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.
0
回復
sunnile
LV.5
9
2003-09-21 01:04
@cxzcjz
有問題電路及器件選擇肯定有問題
器件問題
這種小功率的,如果從器件著手的話,對成本會有影響呀
0
回復
franc_y
LV.5
10
2003-09-21 14:09
不會吧
我正在做一個這個指標的手充,沒那么差啊
0
回復
jacki_wang
LV.11
11
2003-09-21 23:17
@sunnile
regretnowihavenotsomenecessarymaterial.iwanttogetsomesugestionintheory.Haveyoumetsuchprobelem?andwhatmeasuredidyoutake?appreciated.
I'm sorry Sigama, I'm sorry that I had never been troubled by such a problem.
0
回復
13686445390
LV.4
12
2005-06-22 22:54
@franc_y
不會吧我正在做一個這個指標的手充,沒那么差啊
看看你的變壓器感量,是不是太小了,那樣的話工作頻率太高,你的損耗越高,反而效率會低!
www.dykf.com充電器版塊!
0
回復
葉孤城
LV.4
13
2005-06-23 16:37
@sunnile
零件用的是Viper12的IC,secondarydiodeisSB260.Ithink,isallcausedbyleakinductor?
你們什么公司.
0
回復
fujiang
LV.5
14
2005-06-23 20:17
我就是用的VIPer12A做的4.2V1A都有百分之七十呢
0
回復
黑的眼
LV.9
15
2005-06-24 08:38
@sunnile
regretnowihavenotsomenecessarymaterial.iwanttogetsomesugestionintheory.Haveyoumetsuchprobelem?andwhatmeasuredidyoutake?appreciated.
如果你的元件沒問題的話基本上可以肯定是變壓器的問題或者是它的設計
0
回復
黑的眼
LV.9
16
2005-06-24 08:49
@fujiang
我就是用的VIPer12A做的4.2V1A都有百分之七十呢
如果元件沒有問題的話基本上可以說是變壓器引起的或者是它的設計
0
回復
jwtadvd
LV.2
17
2005-06-24 12:14
@jacki_wang
Theleakageinductanceshouldbeaproblem.ButIdon'tthinkitistheall,ifyoudonotcare,uploadtheschematicforreference.whatistheinputvoltage?universal?
你的禿頂我明白,但你說的話我不清楚,不然就用的白話吧
0
回復
jwtadvd
LV.2
18
2005-06-24 12:16
JACHI-WANG 是個高手,你拖住他沒錯
0
回復
shuangying
LV.4
19
2010-04-06 08:19
這個應該可以幫到您!

或聯絡:18926539329,肖工。
0
回復
主站蜘蛛池模板: 亚洲综合成人婷婷五月在线观看 | 国产精品久久久久无码人妻 | 久久亚洲中文字幕伊人久久大 | 在线精品亚洲一区二区动态图 | 人妻无码中文字幕永久在线 | 日本黄色免费片 | x88av入口av在线 | 好爽快点深一点好大 | 亚洲富人天堂视频 | aaa一级毛片 | 日韩精品一区二区三区四区视频 | 综合自拍亚洲综合图区高清 | xxxx18欧美 | 久久久综合久久 | 中日韩一级视频 | 久久九九热 | 两性毛片 | 二区在线观看 | 亚洲AV无码A片在线观看 | 亚洲韩国一区二区三区 | 精品国产鲁一鲁一区二区三区 | 免费精品国产福利片 | 九一视频国产 | 日本国产黄色 | 中文不卡视频 | 男女好痛好深好爽视频 | 姑娘第7集在线观看 | 精品亚洲一区二区 | 国产精品在线看 | 国产成人综合自拍 | 亚洲3p激情在线观看 | 久久天天躁狠狠躁夜夜96流白浆 | 一本大道久久a久久精二百 国产av一级片日韩二区 | 亚洲人成精品久久久久 | 中文人妻无码一区二区三区 | 欧美日韩国产片 | 成人一区二区三区久久精品嫩草 | 亚洲精品久久久久久久久久 | 91麻精品国产91久久久久 | 无码人妻一区二区三区AV | 国产性一交一乱一伦一色一情 |