wiz123

電壓電流功率顯示準確嗎?
lau1900 發表於 2013-12-13 20:14

外國話部野有個HEATSINK過熱會自動RESET, 但我就唔多覺有問題,
佢地拆出黎RUN, HEATSINK冇左風扇吹乜都過熱啦!
試下電腦CPU唔用風扇都過熱, 重係咁講未見過咁BAD DESIGN, 越黎越睇唔起果個網站

ckshum

回復 23# lau1900

This blog showed that the regulator in the original design was over 80 degrees even with air circulation.  Rigol has modified the design twice and the latest version, with a much bigger heatsink, runs much cooler.

http://www.eevblog.com/2013/08/1 ... 2-lab-power-supply/
http://www.eevblog.com/2013/08/3 ... sign-investigation/
http://www.eevblog.com/2013/11/1 ... er-supply-followup/

wiz123

回復  lau1900

This blog showed that the regulator in the original design was over 80 degrees even  ...
ckshum 發表於 2013-12-14 10:30

nvidia ATI 幾千蚊張D顯示卡有風扇吹80度都只係普通野, 又唔見佢話人BAD DESIGN...
雖然我都同意一定有改善空間, 但條友似針對多D
我果部5月買都冇事, 佢個REVIEW都成8月, 可能而家中國同日本一樣, 出口D野差D

ckshum

但條友似針對多D ...
wiz123 發表於 2013-12-14 10:48

呢個blog主其實好buy中國貨，包括Rigol既示波器、國產低檔Fluke DMM都有幾好評價

wiz123

呢個blog主其實好buy中國貨，包括Rigol既示波器、國產低檔Fluke DMM都有幾好評價 ...
ckshum 發表於 2013-12-14 10:56

好想睇佢爆開果D美國名牌野,
跟住CHECK下用風扇吹同唔用個HEATSINK會幾多度
點都要有比較下先得,

不過佢果部明顯有問題, 幾分鐘會自己RESET, 但估計不是HEATSINK問題, 我果部5月買都唔覺有事

pl8888

貨到付款係賣家SET既,佢肯,貨運公司又肯代收貨款咪得囉
不過你知運上去難,佢都知,佢會唔會比你貨到付?運費 ...
billyck2 發表於 2013-12-13 18:35

我都知, 所以貴野都唔敢TB, 幾廿紋有問題當跌左算, $XXXX 我就唔能夠當跌左, 去維權就煩, 所以問下勇敢既 CHING 既經驗, 希望唔使交禁多學費

billyck2

我都知, 所以貴野都唔敢TB, 幾廿紋有問題當跌左算, $XXXX 我就唔能夠當跌左, 去維權就煩, 所以問下勇敢既 ...
pl8888 發表於 2013-12-14 12:11

所以$XXXX果D我都唔敢去淘

minki

nvidia ATI 幾千蚊張D顯示卡有風扇吹80度都只係普通野, 又唔見佢話人BAD DESIGN...
雖然我都同意一定有改善空間, 但條友似針對多D
我果部5月買都冇事, 佢個REVIEW都成8月, 可能而家中國同日本一樣, 出口D野差D
wiz123 發表於 2013-12-14 10:48

ATI講明預左RUN80~100度
但係果粒唔係
OUT SPEC就係OUT SPEC...