a****y
发帖数: 255 | 1 只是好奇, 有人知道现在的LAPTOP的AC ADAPTER怎么设计的吗? 现在的是AC输入是220V
和110V都可以, 然后输出是+16V 或+19V等. 难道是变压器降压后, 变直流电压, 然后
用带标准电压的Low-dropout (LDO) Linear REGULATOR完成电压的控制吗? |
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e******e
发帖数: 147 | 2 可以参考 Bin Wu的 High-Power Converters and AC Drives
以及 HVDC相关的书籍 |
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gr
发帖数: 2958 | 3 啊？
MS和google有招搞power supply，高功率dc-ac的么？ |
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r********r
发帖数: 677 | 4 如果要AC和DC源串联，可以在AC输出端加隔离变压器， 这样比较安全。 |
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E*****a
发帖数: 757 | 5 你这个AC的频率只有1k，这个ac coupling用的电容电感都要比较大才好。 |
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m****a
发帖数: 33 | 6 Hi, I can't find a board called electrical engineering so have to post this
question here.
I have a PDA(Tungsten E) that comes with a commercially made AC adaptor(5V
output). Now I want to make one myself that can take DC input. It will be a
simple circuit of LM317 regulator. Then a thought struck me: is there such a
chip in the commercial adaptor? If so, maybe I can just change the adaptor a
bit so it can use DC input also. Can anyone tell me something about this kind
of AC adaptor?
I do want t |
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发帖数: 1 | 7 AC主管（分析化学部项目负责人） （应届博士可申请 分析组长薪资 20-30万年薪，5
年以上药企工作经验可以申请分析主管薪资 50-60万以上年薪，优秀可以面议，
联系人 伏婷 WeChat:futing2870 Cell:18502196245 Email:[email protected]/* */）
职位要求：
1.博士学历，分析化学、药物化学、有机化学、生物化学等相关专业，专
业基础扎实
2.拥有海外教育或工作背景
3.有丰富的制药行业分析相关经验优先
4.英文口语流利，能与国外客户进行良好工作沟通
5.有团队管理经验优先
6.有一定的抗压能力和良好的团队合作精神
岗位职责：
1）提高分析业务素质，负责项目组的相关分析工作，如反应过程控制、
电话会议，参与并领导项目审计、放行和稳定性测试、项目预算等；
2）参... 阅读全帖 |
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wy
发帖数: 14511 | 8 【 以下文字转载自 AC 讨论区 】
【 原文由 wy 所发表 】
由于版主没有响应我的申请BF的要求, 所以我决定申请AC版BM. 请考虑. |
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a***l
发帖数: 108 | 9 理由1:
我工作学业紧张.
理由2:
我接手了LOVE版斑竹一职,管理任务很重.
理由3:
我没有能实现我当初申请时的诺言,繁荣AC版.
所以,我请求辞去AC版板斧的职务,现在已等到斑竹的同意.
Aquil |
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f*******a
发帖数: 2662 | 10 【 以下文字转载自 AC 讨论区 】
【 原文由 forestsea 所发表 】
我志愿成为AC版一名光荣的版副
全心全意为朋友们服务
防止水干河枯的悲剧长期上演 |
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f*******a
发帖数: 2662 | 11 【 以下文字转载自 AC 讨论区 】
【 原文由 forestsea 所发表 】
Resign the BF of AC board.
Thanks every friend here gave me the chance to take
this place for a such long term.
I will remember every sentence you said to me,
every laughter from your places, and every kick
from your feet here.
Have to say I spend a wonderful time during my life here
and I will be never regret losing so many water here
It's time for me to go to bed have a good rest.
don't pk at me. My heart will go on and on..
Regards,
F |
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p****s
发帖数: 32405 | 12 【 以下文字转载自 Soccer 讨论区 】
发信人: mind (mind), 信区: Soccer
标 题: AC米兰球迷太过分了 (转载)
发信站: BBS 未名空间站 (Sun May 15 21:24:33 2011, 美东)
发信人: mind (mind), 信区: Joke
标 题: AC米兰球迷太过分了
发信站: BBS 未名空间站 (Sun May 15 21:24:16 2011, 美东) |
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m*******e
发帖数: 6358 | 13 新浪体育讯 北京时间12月26日消息，AC米兰[微博]与马德里竞技之间关于托雷斯与
切尔奇的换租协议突生变故。据意大利媒体报道，由于切尔奇不愿意去米兰，这桩交易
可能告吹。
两家俱乐部之前已经谈好了交易细节，其中包括换租之后双方继续支付自己球员的
工资，即米兰继续支付托雷斯的一半工资，马竞方面则负责切尔奇的工资。然而在双方
达成协议之前，切尔奇本来已经在经纪人的运作下接近加盟国际米兰[微博]，据报道球
员本人与曼奇尼私下关系良好，因此切尔奇更希望加盟蓝黑军团。
托雷斯方面已经答应了这桩交易，西班牙人甚至希望明天就回到老东家报到，同时
也不参加米兰的迪拜之旅，现在由于切尔奇方面的拒绝，托雷斯的如意算盘可能落空。
当然双方已经谈好的交易不会轻易放弃，现在马竞和米兰双方都在做切尔奇的工作，马
竞方面态度非常坚决：去米兰或者继续坐板凳。另一位马竞要出手的球员劳尔-希门内
斯正在与马拉加[微博]和摩纳哥方面谈判，一旦希门内斯在切尔奇之前完成转会，那意
大利可能真要留在来继续坐板凳了。
如果交易流产，托雷斯会继续留在AC米兰，。而米兰方面早已决定放弃西班牙人，
马竞可以与切尔西[微博][微博]联系... 阅读全帖 |
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w*******0
发帖数: 2949 | 14 新浪体育讯 北京时间9月16日，AC米兰官方宣布前锋帕托与队长安布罗西均将因伤缺
战三周左右时间。
在昨天的欧冠首轮比赛中，AC米兰2-0轻取欧塞尔，拿下了本赛季欧战的开门红，
比赛胜利之外，米兰收获的却是两条不幸消息，在比赛进行第到 55分钟时，帕托再次
因伤提前被换下场。经过米兰吉安卢卡博士的诊断后确诊帕托的左腿内侧肌肉轻微扭伤
，所幸伤势并不严重，将缺战2-3周时间。
而本场比赛的另一伤员队长安布罗西尼在上半时17分钟就受伤下场，主治医师沃尔
皮博士认为安布罗西尼左膝韧带损伤，也将因伤缺阵三周时间。
看来帕托真的是彻底玻璃化了！！ |
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w*******y
发帖数: 60932 | 16 Not sure if it's a glitch but code is working for PS3!
Apply Coupon Code = GS29
Also try code saver!
This Sony PlayStation 3 250GB Father's Day Bundle includes the following
items:
PlayStation3 250GB system with 1 DUALSHOCK3 wireless controller
Little Big Planet
Infamous
AC power cord
AV cable
USB cable
Linky:
http://www.gamestop.com/Catalog/productDetails.aspx?sku=020051
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w*******y
发帖数: 60932 | 22 Good morning all! Looks like the Black Friday ad for Staples is live online
right now. They have the Seagate Freeagent Go 1TB Portable Drive for 89.99
after instant coupon (item 824322). Buy a $25 off $75 coupon off Fleabay or
ejunkie and get it for $64.99 + tax + your cost of the coupon (I many for
around $1.10 - $1.57).
Shipping and tax to home was around $70.76 to NY. Including my cost for the
coupon it was $71.86. Definitely one of the best prices I've seen for a 1TB
portable drive and I won... 阅读全帖 |
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w*******y
发帖数: 60932 | 24 Dell Inspiron Mini 10.1in Netbook 1.6GHz 1GB 160GB WiFi HDMI:
http://shar.es/XkbQw
(PreOwned) $150 AC @ Cowboom.com
Use Coupon Code: CowBoom10 for $10 off.
Note: Choose the one with all included option , Look for this one:
quote
Notes:
Memory: 1GB Processor Type and Speed: Intel Atom 1.6GHz Ethernet: 10/100
Pointing Device Type: Touchpad USB Ports: 3 Media Reader Slots: 3 in 1 O/S
Installed: Windows 7 Starter O/S License Display Size (Inches Diagonal): 10.
1 Hard Drive Capacity: 160GB Wirele... 阅读全帖 |
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w*******y
发帖数: 60932 | 29 Universal GPS Car Mount Holder:
http://www.shop4tech.com/item8622.html
code JN15 gets you 15% off / exp. 1/20/11
Features
* Color: Black
* Universal design works with all types of iPod / MP3 Player / PDA / GPS
/ Cell phone
* Firmly mount on to Windshield / Dash / AC Vent and can be removed
easily
* Extra firm pedestal absorbs vibration and provides stable viewing
platform
* Vent pothook, 360 degree rotating support holder
* PDA holder with quick release button for extendi... 阅读全帖 |
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w*******y
发帖数: 60932 | 32 GV2000.jpg
GunVault MultiVault Deluxe Pistol Gun Safe w/ Motion Detector
GunVault GV2000C-DLX
Product ID: 064-GV2000C-DLX
Model:
GunVault GV2000C-DLX
[B]Sale: $124.20+ FREE SHIPPING & NO TAX in most states
5% COUPON: 350331
Big Steal Price: $118
Save: $70.75
Reg: $194.95
GV2000C-DLX Motion Detector: Included GunVault gun safes are truly premium
products that set the standard for the rest of the industry. The patented No
-Eyes Keypad provides lightning quick access, even in the dark. The Mini
... 阅读全帖 |
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w*******y
发帖数: 60932 | 33 Universal GPS Car Mount Holder:
http://www.shop4tech.com/item8622.html
code FP15 gets you 15% off / exp 3/9/11
Features
* Color: Black
* Universal design works with all types of iPod / MP3 Player / PDA / GPS
/ Cell phone
* Firmly mount on to Windshield / Dash / AC Vent and can be removed
easily
* Extra firm pedestal absorbs vibration and provides stable viewing
platform
* Vent pothook, 360 degree rotating support holder
* PDA holder with quick release button for extending... 阅读全帖 |
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w*******y
发帖数: 60932 | 36 Attachment 493897
a) GunVault MultiVault Deluxe Pistol Gun Safe w/ Motion Detector
GunVault GV2000C-DLX
DELUXE and big enough for multiple handguns. NEW COUPON BELOW
Product ID: 064-GV2000C-DLX
Model: GunVault GV2000C-DLX
Sale: $124.20+ FREE SHIPPING & NO TAX in most states
5% COUPON: 350331
Final Price: $118
Save: $76
Reg: $194.95
Google Products $121+S&H:
http://www.google.com/search?q=Gunvault GV2000C-DLX Multi Vault Deluxe Gun Safe&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&cli... 阅读全帖 |
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w*******y
发帖数: 60932 | 43 Hey guys,
I didn't see this posted anywhere so I thought I'd share.
Prestone is currently offering a mail-in rebate for $7 off any 1 gallon or $
15 off any 2 1 gallon containers of concentrated Anti-freeze (Extended Life
& Dex-Cool Extended Life). The rebate also provides for $5 off any 1 gallon
of 50/50 Pre-diluted or $11 off any 2 1 gallon containers of Pre-diluted
Anti-freeze (Extended Life & Dex-Cool Extended Life).
Here is the REBATE FORM:
http://www.prestone.com/sites/default/p/Prestone-R... 阅读全帖 |
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w*******y
发帖数: 60932 | 44 So I just saw this thread for $50 gift card for buying camera regularly
priced $149 or more. I think what I'm about to post deserves its own thread
(assuming it works).
Went to browse some cameras to see what some potentially good deals might be
for the upcoming promotion. Saw that the Panasonic Lumix FH22 was $100.
Checked prices and see that these are ~$125 everywhere else right now.
Thought that $75 AC was a decent price already, so I searched SD for past
deals.
Only saw two threads, one o... 阅读全帖 |
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w*******y
发帖数: 60932 | 49 This deal requires a $25 off $75 staples coupon. Most of you know where to
find them.
Staples is offering TurboTax Delux (Fed+efile+state) for $59.99 with a $5
Staples GC (AER) and $30 off select quicken titles (AER). If you do not
need the state version you can save another $10 by purchasing the the Fed+
efile version.
Staples also Has Quicken Deluxe (CD or Download) normally priced at $59.99
marked down to $38.99 after instant savings.
Add both to cart:
TurboTax Delux:
http://www.staples.com... 阅读全帖 |
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