e*i
发帖数: 10288 | 1 discontined printers can earn a lot, but it is just fishing business.
Biz partner sold one HP 6500 wireless last spring for $600. He bought
it from staples.com for $50 long long ago. |
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m*******s
发帖数: 925 | 5 4,前段时间，nature made MINI discontined打电话要refund.给了$100左右的支票。 |
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j******u
发帖数: 41683 | 6 ☆─────────────────────────────────────☆
marsmission (伙呆了) 于 (Fri Dec 27 00:43:19 2013, 美东) 提到:
大家来说说本年度自己最满意或比较满意的deal。
要求简单说明是怎么样的deal，比如买了什么东西，如何买的（用了胖子或code），最
后免费/倒赚/oop大概多少等等，简单明了就行。
deal不单单指药店的丢，别的比如电子产品，文具服装等的deal都可以说说。
就在此帖下跟贴，每个人可以多说几个，每个id最多可得3个包子，多个deal请分别跟
贴（以便版务马克包子），不要把几个deal集中在一个跟贴里说。
时间：1/7截至。
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EA () 于 (Fri Dec 27 01:06:02 2013, 美东) 提到:
前几周在office depot 买了75%off 书架，计算机桌，文件柜，花了100刀
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EA () 于... 阅读全帖 |
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a**u
发帖数: 8107 | 8 去年买了两包，最近运气不好，挂底了不少。到walmart一看，没啦。难道是discontin
ued了？主要是这东西用习惯了，这个季节大嘴和可爱皮都靠它了。。。 |
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r****a
发帖数: 105 | 9 恩，昨儿我也去Walmart补货。确实找不到了，只在打折专柜找到一包原始版的---Litt
le Joe。不过发现Berkley新出了一种极为相似的，2寸，黑白，看着不错，单价也差不
多。可一试。
discontin |
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v*****r
发帖数: 2325 | 10 i was choosing between burner and callaway driver, the staff at golfmart
seem not to support me to get burner. don't know why. will burner be
discontined by taylormade? i get callaway because of shaft options and like
the 3wood in the deal.
burner has longer and very light shaft, so it's very much distance oriented.
the staff told me all pro use 45 inch standard length for Driver shaft
for control. and burner is pretty much for high handicappers... for
100mph club head speed, 1inch l |
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uj
发帖数: 324 | 11 Nikon D750 DSLR Camera with 24-120mm Lens Basic Kit
听说discontine d750+24-120
今年新机要上市了 |
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uj
发帖数: 324 | 12 Nikon D750 DSLR Camera with 24-120mm Lens Basic Kit
听说discontine d750+24-120
今年新机要上市了 |
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g*******r
发帖数: 140 | 15 Here are several general points :
1> Power efficiency, buck is usually much better than boost. (But in this
application, the buck solution needs 2 batteries and thus the efficiency
should be halved to make a fair comparison with boost?)
2> Desisgn of the start-up for buck is much easier than booster.
3> In CCM, output capacitor charging current of buck is conitunous, which is
always discontinous in boost.
4> There are many fast control methodologies for buck in literatures such as
hysteretic, V2 |
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g*******r
发帖数: 140 | 16 A rough calculate for boost converter output ripple:
During DT when inductor is charging, output is purely discharged by ILoad.
Thus Vo(ripple)=Iload*DT/Co.
Thus the inductor does not affect the output ripple very much in boost.
Of course, if taking ESR into account, output voltage will have jump due to
discontinous capacitor charging current.
If you want to find the proper L&C, you could just do some simple openloop
simulations with ideal component and obeserve output ripple for that.
question |
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