最新日志

发表于:2008-6-6 11:11:33
标签：无标签

0

the ideal background for a mechatronics engineer

　　Mechatronics is a cross-disciplinary system-level discipline. So, a mechatronics engineer needs a very broad technical background as well as communication and interpersonal skills. 　　The term system-level gets …

系统分类: 运动控制   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(153)
发表于:2008-6-6 11:10:05
标签：无标签

0

Why conduction cool an embedded computer?

　　Anyone who has actually put an operating laptop computer on top of their lap knows why cooling is important for any computer. Microprocessors dissipate a lot of electric power, which turns into heat, which must be rem…

系统分类: 工控机   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(113)
发表于:2008-6-6 11:01:45
标签：无标签

0

A portable instrument to measure room air pressure

　　The full text of the question is: Could you recommend some handheld instruments that can easily measure and indicate room air pressure (positive or negative, and how much)? 　　The short answer is “No.” As a journali…

系统分类: 运动控制   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(111)
发表于:2008-6-6 10:57:37
标签：无标签

0

Any problems to watch for when overdriving a motor

　　The reader who sent in this question said he normally sizes motors to run at between 75% and 100% of rated speed, but asks about overdriving by 150% by setting the variable frequency drive (VFD) at 90 Hz, rather than 6…

系统分类: 电机传动   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(107)
发表于:2008-6-6 10:55:27
标签：无标签

0

microprocessors are favored for control applicatio

　　As I was walking down the corridor at the last Embedded Systems Conference, a man stopped me. “I saw your media badge,” he said, “so I wanted to speak to you about my company GruntWare Inc.” 　　Zen training …

系统分类: 运动控制   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(116)
发表于:2008-5-9 17:04:40
标签：无标签

0

How do I transmit voltage signals?

　　The full text of this question is: I need to transmit voltage from fusebox to a receiver 5 m away. What kind of transmitter and receiver do I need?　　Good news is that 5 m is actually not a very long way to carry a voltage signa…

系统分类: 电源电缆   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(199)
发表于:2008-5-9 17:00:10
标签：无标签

0

semiconductor engineers & “critical dimension”

　　The full text of this question reads: What do we mean by say, 45 nanometer (45 nm) process in semiconductor fabrication? Does it refer to smallest component size or the wafer thickness? What are the difficulties and the li…

系统分类: PLC/PAC   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(275)
发表于:2008-5-9 16:53:58
标签：无标签

0

What microprocessors are favored for control appli

　　I’m not sure you’re asking the right question. What you really need for control applications is a controller, which is a complete computer system, not just the microprocessor. As a control engineer, that is what you want to c…

系统分类: PLC/PAC   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(148)
发表于:2008-5-9 16:49:52
标签：无标签

0

What microprocessors are favored for control appli

　　In response to: What microprocessors are favored for control applications?　　John Schott, CAP, PE commented:　　Very confusing and did not answer the question. Also skipped over the important question of …

系统分类: PLC/PAC   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(121)
发表于:2008-5-9 16:47:48
标签：无标签

0

How does a buck regulator work?

　　A buck regulator, more properly called a buck convertor, is a dc-dc step-down power supply utilizing the fact that inductors react to electric-circuit fluctuations in such a way to keep the current flowing through them cons…

系统分类: 电机传动   |    用户分类: 无分类    |    来源: 原创

评论(0) | 阅读(158)
2【下一页】总共 , 当前 /