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l*******e 发帖数: 1485 | 2 有没有系统阐述oscillator的教材?
翻看了好几本书,都只是很简单的介绍。
另外,oscillator有没有什么研究热点?
听说mems oscillator 要替代crystal oscillator? |
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l*****o 发帖数: 26631 | 4 呃, 这个其实要看你自己的选择啊
比如你锯根2x4, 用miter saw几秒钟就锯完了, 用oscillating saw要锯个十分钟,
相当于花钱买时间, 你买的锯子越多, 做起来越方便越快。
还取决于你以后是不是会要DIY其它东西, 如果只打算做这么一次的话也没必要投资太
多工具的钱。
我家现在是买了miter saw, reciprocating saw和oscillating tool
miter saw主要用来把木料切到需要的长度, 2x4, 2x6, 4x4, etc
reciprocating用来拆东西, 比如冒出来的钉子, 不要的墙壁柜子之类的。
oscillating平时锯点小东西, 包括吃的, 比如椰子, 囧 |
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m*********8 发帖数: 6 | 6 现在需要设计一个1175MHz的oscillator,因为查了一下,能买到的最高的oscillator只
有1G,问了一下老师,给我画了一个图,要VCO,TLL,crystal oscillator,但是看不
懂啊,不知道怎么搞,说编程达到fout=N*fin(crystal).哪位高人能帮忙,资料。感谢
。 |
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w*******y 发帖数: 60932 | 8 This is a solid oscillating tool kit. Does Lowes price-match their online
price?
ROCKWELL SoniCrafter 20-Piece 2.3-Amp Oscillating Tool Kit
Item #: 315224
Model #:RK5100K
$48.00
Was: $119.00 (Save 59% thru 06/29/2011)
Shipping start at $5.99
Online Only Price
Link:
http://www.lowes.com/pd_315224-54602-RK5100K_0__?productId=3139 OFF ROCKWELL SoniCrafter 20-Piece Oscillating Tool Kit Now $48, Was $119
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R*g 发帖数: 16085 | 9 【 以下文字转载自 EE 讨论区 】
发信人: Rog (Roger), 信区: EE
标 题: 谁有Power System Oscillations pdf?
发信站: BBS 未名空间站 (Thu Mar 11 21:49:40 2010, 美东)
帮我下本书:Power System Oscillations
有包子
thanks very much |
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w*******y 发帖数: 60932 | 12 Dremel 6300-05 120-Volt Multi-Max Oscillating Kit with Free Blades ($45
value) Flush-cut Blade, Bi-metal Flush Cut Blade, and Scraper Blade $79 free
shipping from Home Depot
Add to cart to see priceBlade bonus gives you 3 extra blades. Includes (
MM470 flush-cut blade, MM462 bi-metal flush cut blade, and MM610 scraper
blade)
Powerful 1.5 Amp motor is designed to cut through 1-1/4 in. oak door jamb
Versatile and effective multitasking tool for the DIY enthusiast as well as
for pros; great for cut... 阅读全帖 |
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g******y 发帖数: 2517 | 13 Dremel Oscillating Tool: Dremel 8300-01 12-Volt Cordless Multi-Max
Oscillating Kit, 51% Off
http://amzn.to/xO7MEe |
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l*****o 发帖数: 26631 | 19 multitool基本上就是啥都能干, 啥都干的比专门的锯子慢
在木板上开洞只能开直线, 如果开曲线的话就需要jig saw了。
切角度的时候需要miter saw, 当然oscillating/circular saw也能凑合, 但是对技
术要求就高很多, 切歪了会不好看。
grinder锯片这么短, 拆柜子或者其它什么大件的时候经常需要锯片伸进去一大截来锯
的, 这个时候就只能靠reciprocating了。 |
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r*****e 发帖数: 185 | 20 赞这个DIY mm!
那个oscillating tool显然没法handle你的project list。个人觉得最基本的DIY必备
工具有:
Power drill - 最好是18v的。这个居家必备,不DIY也该有。
Circular saw - 7.25" 以上的,配一个Diablo的fine blade,别买battery的。这个用
处最大,table saw和miter saw能干的它都能干。
Jigsaw - 还算有用,不过锯厚木头的时候,blade容易弯。
Sander - 有用,别买battery operated的。
Router - 很好玩,主要是做木工的finish用,装修的时候用处不大。
装地板的话强烈建议买个flooring saw。
http://www.amazon.com/SKIL-3600-02-120-Volt-Flooring-Saw/dp/B00
这基本上是table saw和miter saw的hybrid。做其他木工的时候也经常能用。
给客厅和主卧安装recessed light
给客厅和餐厅安装crown molding
paint主卧卫... 阅读全帖 |
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k**x 发帖数: 2611 | 21 谢谢信息。
我想买套oscillating tools就是图干小活方便。
毕竟是女生,重的工具我拿着累。
我也不太喜欢电池的工具。基本就是在家做点东西,
不如用电线的。电池的工具如果要买好的电池,其实
挺贵,还得记得充电。所以我觉得各种锯子不如把钱
花在好的刀片上,而不是好的电池上。
我上次铺laminate地板用的miter saw和jigsaw.
也能用,就是没那么整齐。 |
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u****q 发帖数: 24345 | 22 偶的HF $19.99 oscillating tool用的好爽好爽爽爽爽爽爽爽。 |
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J**S 发帖数: 25790 | 23 OSCILLATION TOOL是塑料的,对付室内的墙面还可以,SAND木板,好像不行。主要是想
外墙刷漆,有的漆已经翘起来了,要SAND才能再油漆。 |
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r*********s 发帖数: 2157 | 24 Oscillating Tool的sand功能就是修修补补边边角角的,你大面积sand肯定不行。
umQdOq说的对,Random-orbit sander,or Belt sander.
不过你要外墙那么大面积的sanding,要考验你的工具质量了。 |
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ra 发帖数: 827 | 25 推荐Bosch MX25。Oscillating Tool如果不好很别扭。 |
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l****o 发帖数: 372 | 28 看youtube是用oscillating tool把四周的grount磨掉把瓷砖敲下来
有人有好的教程吗?需要换下面几个 |
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m*******g 发帖数: 383 | 29 【 以下文字转载自 Living 讨论区 】
发信人: mywinding (winding), 信区: Living
标 题: sprinkler喷头oscillating和rotating的有何区别?
发信站: BBS 未名空间站 (Mon Jun 2 21:57:46 2014, 美东)
新地主,没有任何gardening的经验。有经验的帮忙说说?有没有推荐的型号?
东部,lot大概0.25 acre。非常感谢! |
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w********u 发帖数: 90 | 30 设计个4.35GHz 的ring oscillator ,共3级,有2级用了capacitor 做load(增加
phase margin). 但是用cadence仿真时候发现加 那个Ipulse 做噪声源直接被放大。。
。不起振,我郁闷之中把一个什么参数没设设,只写了个2Ghz 的vsin 源(没和任何电
路连接,就是个孤零零的东西)放到schmetic里面,也没连线, 结果, 在4.2GHz,
电路起振了,spectrum 看上去不错,transient 也是指数上升。。。但是没这个东西
就没法振动。。
大家遇到过这种诡异的事情没?我实验室的博士说没有。。我郁闷了。难道是bug? 我
重启很多次也一样。 |
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l*******e 发帖数: 1485 | 31 今天?
我查了一下啊,2006年2月,UFL SIMICS 搞出了 “160GHz VCO, 130nm CMOS”, 我的
理解不一定正确 (还正在学oscillator基本知识呢)。 |
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k**f 发帖数: 11 | 32 They even made a 410GHz push-push oscillator this year using 45nm CMOS. |
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R*g 发帖数: 16085 | 33 帮我下本书:Power System Oscillations(graham rogers)
有包子
thanks very much |
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R*g 发帖数: 16085 | 34
不好意思,弄错了 是这本书
power system oscillations (graham rogers)
Thanks anyway,baozi sent |
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t******e 发帖数: 114 | 35 如果oscillation waveform 被AM modulated,会同时产生FM modulation吗?会影响
frequency stability 吧? 有关这方面的文章麻烦推荐一下,谢谢。 |
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b*****l 发帖数: 9499 | 36 有俩 oscillator 被 couple 到一起,固有频率不同,coupling 的渠道有一或多条,想
问问这种系统有没有什么著名的案例,都有啥有趣的数学性质。。。 |
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e*******6 发帖数: 13 | 37 synchronization of coupled oscillators is an very active area of study. you
can check Kuramoto model, Steven Strogatz on wikipedia.
This model is a quite famous example in this area |
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L******f 发帖数: 5368 | 38 美国Main Injector Neutrino Oscillation Search (MINOS)
曾经在2007年观测到中微子超光速。当时实验精度较低。
现在MINOS发言人Jenny Thomas宣布MINOS将在更高精度
重复中微子超光速实验。
夸克,电子,μ子,τ子都带电荷。惟有中微子不带电。
有可能打破相对论的唯一候选人就是中微子。
换言之,本狼预言μ子,τ子将和质子,中子,电子一样,
将符合相对论,不可能超光速。
Go,MINOS!
哈哈,言过其实了,引力子也不带电。也可能打破相对论。
不过,引力子到现在还没现身,不能指望它了。 |
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b****y 发帖数: 105 | 39 check Scanziani's recent Nature paper, in which they generated gamma
oscillation using ChR2
we repeated it and it worked |
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w*******y 发帖数: 60932 | 43 Amazon dropped their price on the refurbished Dremel Multi-Max to $50.25.
It has been a few cents less than $55. The model description is: Dremel
6300-02L-RT 120-Volt Multi-Max Oscillating Kit FS of course with Amazon.
Link::
http://www.amazon.com/Factory-Reconditioned-Dremel-6300-02L-RT-
I used one of these for the first time a few weeks ago. It's definitely a
tool worth having for a DIY. I was able to flush cut baseboard to add trim
to a closet. Without this tool I would have needed a fl... 阅读全帖 |
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w*******y 发帖数: 60932 | 44 Menard's has their Utila-tool oscillating tool 241-0853 (Fein Multi-master
knock-off) on sale for $49.99 with a $30 rebate, $19.99 plus tax net.
The kit includes a carrying case and 50 or so blades - the blade kit alone
retails for $40 or more, so this is a good deal.
Sadly, it's B&M only - not available online at that price.
It's advertised on page 4 of the "Crazy Days" sale ad.
Link:
http://menards.inserts2online.com/customer_Frame.jsp?drpStoreID
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w*******y 发帖数: 60932 | 46 This deal is back again, this time until 8/20/2011. Limit 5. Coupon link
updated.
This is valid BOTH online (+S&H+tax) and in-store (+tax), but will have to
pay shipping if you buy online. If you're going to use this online, use the
code 65352163. Also, the coupon is VALID FOR BOTH models listed below.
Coupon:
There are now 2 versions of this tool and the coupon is valid for both.
Limit 5.
Here is a link to the old model (67256):
67256 (old model):
http://www.harborfreight.com/multifunction-powe... 阅读全帖 |
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m*****g 发帖数: 12253 | 47 ☆─────────────────────────────────────☆
wawaya (花信子) 于 (Wed Aug 8 10:40:11 2012, 美东) 提到:
如果挖的坑点击率超5000了,或者跟帖超过 200, 请在这个贴里报名,我当天奖励包
子。
修改,改为跟帖150
☆─────────────────────────────────────☆
spiritys (流氓兔二号) 于 (Wed Aug 8 11:13:08 2012, 美东) 提到:
赞~~不过难度好高啊。。
☆─────────────────────────────────────☆
oscillator (oscillator) 于 (Wed Aug 8 11:17:17 2012, 美东) 提到:
赞 眼光, 一下就看到关键点
☆─────────────────────────────────────☆
oscillator (oscillator) 于 (Wed Aug 8 11:17:37 2012, 美东) 提到:
顺便问下, 麻将... 阅读全帖 |
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f**d 发帖数: 768 | 48 这是一本计算神经科学的优秀著作,全文拷贝这里(图和公式缺),有兴趣的同学可以
阅读
如需要,我可以分享PDF文件(--仅供个人学习,无商业用途)
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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A*******g 发帖数: 607 | 49 PWM 1khz 只是专利的第一项:
http://www.freepatentsonline.com/y2011/0164069.html
What is claimed is:
1. An electronic device, comprising: a display panel comprising a plurality
of pixels; a light source comprising a plurality of light emitting diode (
LED) strings adapted to generate light to illuminate the plurality of pixels
; and display control logic adapted to sequentially activate and deactivate
each LED string of the plurality of LED strings at a frequency of
approximately at least 1 kHz.
2. The el... 阅读全帖 |
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A*******g 发帖数: 607 | 50 PWM 1khz 只是专利的第一项:
http://www.freepatentsonline.com/y2011/0164069.html
What is claimed is:
1. An electronic device, comprising: a display panel comprising a plurality
of pixels; a light source comprising a plurality of light emitting diode (
LED) strings adapted to generate light to illuminate the plurality of pixels
; and display control logic adapted to sequentially activate and deactivate
each LED string of the plurality of LED strings at a frequency of
approximately at least 1 kHz.
2. The el... 阅读全帖 |
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