 | Recent Questions & Answers | |
| Current Control for LED driver |
| By Nenya_03 in Electrical Engineering |
I'm currently trying to learn the design of an LED driver. From what I've seen so far, namely papers and application notes and datasheets, I gather that the preferred method of current control for an LED string is the peak current control. I also noticed that the hysteresis current control is also ... more |
| Difference Between L, M, and H Type Vented NiCd Cells |
| By rizwan in Electrical Engineering |
Hi everyone, Well here's what I wanted to know: difference between L, M, and H type of vented NiCd cells. Although I know the basic difference, I would like to know in more detail in terms of construction, function, application and charging methods. If anyone knows or can provide any link, I'd be ... more |
| Solenoid Valve Question |
| By Fribbit in Mechanical Engineering |
I'm searching for a low-cost water-compatable solenoid valve and have learned the basic design differences between direct-acting and pilot-operated. But I'm confused as to what are the advantages of each. Is one type significantly less expensive or more reliable? My application is to basically open ... more |
| MGE Galaxy 5000 |
| By Alanmodular in Electrical Engineering |
Hi, I have a MGE Galaxy 5000 80 KVA UPS system. The inverter fuse has blown and I am trying to locate the fuse to change it. Does anyone know the location of this fuse? Thanks Alan |
| Irreversible |
| posted in Left2MyOwnDevices |
2011 was shaped by a combination of social and technological change, and the separation between old and new is becoming more pronounced. Doing business in 2012 will mean embracing and understanding the power of social, and not just the social networking part, but the social business part. Our econ ... more |
| New Year's Resolutions for the Lab? |
| posted in Scientific Instruments |
Making ambitious New Year's resolutions is a favorite January activity. Another common activity is breaking or forgetting those same resolutions come February. Psychologists suggest that by lowering our ambitions we stand a better chance of keeping our resolutions. What do you think: should we lower ... more |
| The Dream Engineering Job |
| posted in Mechanical Components Blog |
Ask an engineer to identify a favorite project and you may uncover a dream job. One engineer recently compared a NASA job to his job at Hershey Park, where the challenges vary from fabricating smooth-enough steel rails for roller coasters to modeling rides that "send 12-ton trains up 150 feet in les ... more |
| Wi-Fi in the Sky? |
| posted in Aerospace Technology |
Increasingly, business travelers are demanding in-flight connectivity. With current rules for electronic device use on aircraft making the headlines — pros and cons — could connectivity prove to be a safety concern? The preceding article is a "sneak peek" from Aerospace Technology, a ne ...more |
| Resolve to Work Smarter in 2012 |
| posted in Drives Blog |
A recent Control Design editorial encourages machine builders to learn more about cybersecurity, sustainability, and efficiency as they turn the pages of their calendars to 2012. What are your work-related New Year's resolutions for 2012? And, how well did you work toward achieving your 2011 goals? ...more |
| Implantable Prosthetic Could Help Prevent Epileptic Seizures |
| By English Rose in BioMech & BioMed |
This may be of interest to some of our members: A system that could electronically detect and prevent epileptic seizures is under development at the Massachusetts Institute of Technology (MIT). Researchers at the US university say the system will rely on an implantable prosthetic, which will det ... more |
| Wordpress - Getting Started |
| By Tonymech in Software & Programming |
Hi all I want to make a new website in Wordpress and all the information I've found so far is complicated. I've worked in HTML and made a few websites, but Wordpress is a whole new ballgame. I'm looking for a simple explanation and guide to get me started. I want a Website not a Blog and have an e ... more |
| Position Qualified for FCAW Welding |
| By ranazia79 in Mechanical Engineering |
I have following case GTAW+FCAW PQR , GTAW was done manually in 5G position while FCAW was done in 1G position on machine. Case-1 Without Impact Test Requirement Position qualified as per QW 405.1 - non essential variable "The addition of other welding positions than those alre ... more |
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