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08/14/2016 12:00 AM

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DC voltage control

08/28/2016
posted in Electrical Engineering
by richma
I need to limit DC volts from Tig welder neg.terminal to use carbon brush S/Steel cleaning system. Volts need to be 10 or less, Amps 0 to 20. can anyo...
Views: 1, Comments: 0
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Economiser water in de-aerator

08/28/2016
posted in Mechanical Engineering
by dreamz
I have seen a P&ID of a CCPP wherein a part of LP economiser of HRSG(Heat recovery steam generator) water is sent to de-aerator. Pegging steam is...
Pathfinder Tags: de-aerator economiser pegging steam
Views: 6, Comments: 2
Last comment 08/28/2016 by dreamz
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Interpret Tables in BSI 61559-1

08/27/2016
posted in Electrical Engineering
by mpegjohn
Hi, I wish to design a HV transformer, 240V pri 0-250 and 0-250 secondaries. I am so confused about the creepage distances shown in the tables, vs t...
Views: 30, Comments: 3
Last comment 08/27/2016 by tcmtech
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Voltage & Current Data Logger with PC Interface

08/27/2016
posted in Electrical Engineering
by Anonymous Poster
Hi, do you guys have some recommendations on Lab instrument above, probably the cheapest around. Where can I possibly buy it? I am having a thesis pr...
Views: 55, Comments: 4
Last comment 08/27/2016 by 67model
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Graphical Display

08/26/2016
posted in Software & Programming
by bhankiii
Hi - I need to use a Windows 10 tablet to display various real time measurements. I'd like to find a program that lets me set up a custom display that...
Views: 68, Comments: 7
Last comment 08/27/2016 by Mikerho
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Saturation of Current Transformer

08/26/2016
posted in Electrical Engineering
by Anonymous Poster
What is the difference between partial saturation and complete saturation of CT's. For example if the CT ratio is 100/1A and if the primary current ex...
Views: 125, Comments: 9
Last comment 08/27/2016 by 67model
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Missile Systems and Rockets

08/26/2016
posted in Aerospace
by kdrdgn07
Hi guys. I'm looking some sources about missile systems(especially ballistic) and rockets. How they are working? What's the working prenciple? Can you...
Views: 151, Comments: 12
Last comment 08/27/2016 by truth is not a compromise
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Thickness Requirement ASME VIII Div.1

08/26/2016
posted in Mechanical Engineering
by Anonymous Poster
Dear All, Can any one tell me where value 0.6 in the formula UG 27 comes from ??, I have tried to work out but unsuccess, I only now that SE must be...
Views: 80, Comments: 4
Last comment 08/27/2016 by SolarEagle
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Scale Accuracies

08/25/2016
posted in Instrumentation
by Anonymous Poster
I have 2 weight scales (one electronic strain gauge scale and one a spring scale) each rated at accurate to +/- 2% of FS weight and both have the same...
Views: 149, Comments: 19
Last comment 08/27/2016 by lyn
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Lubricating Oil

08/25/2016
posted in Mechanical Engineering
by ronseto
I am proposing this as a topic that should start some brains a buzzing. I am an amateur machinist and I have an older lathe, circa late 40's early 50'...
Pathfinder Tags: lubricants machine tools
Views: 148, Comments: 10
Last comment 08/26/2016 by Mr. small
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Calculus and Usain Bolt

08/25/2016
posted in General Discussion
by BestInShow
I thought you mathematically inclined forum members would appreciate this: http://www.futurity.org/usain-bolt-calculus-1233862-2/
Pathfinder Tags: usain bolt calculus velocity
Views: 133, Comments: 13
Last comment 08/26/2016 by Hendrik
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What Is This?

08/25/2016
posted in General Discussion
by evanmjones
OK, without Googling the image, can you guess what this is?
Views: 253, Comments: 48
Last comment 08/26/2016 by redfred
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Ice in Vegetable Trays of Samsung Refrigerator

08/21/2016
posted in General Discussion
by HiTekRedNek
I have a Samsung french door refrigerator Model RF217 ACPN, with the freezer on bottom. After about a year,it started accumulating ice in the ice tra...
Views: 494, Comments: 38
Last comment 08/27/2016 by SolarEagle
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Motor Failure During Starting

08/23/2016
posted in Electrical Engineering
by Anonymous Poster
What can cause motor failure during reduced voltage start? Do you have any references?
Views: 311, Comments: 22
Last comment 08/25/2016 by jack of all trades
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Chinese's Mars Probe

08/23/2016
posted in General Discussion
by tonyhemet
I heard that the Chinese are having a contest to name it's Mars probe. Does anyone know what the prize will be ? And what are some of the names people...
Views: 222, Comments: 21
Last comment 08/24/2016 by phoenix911
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Sodium Acetate on Concrete

08/21/2016
posted in Chemical & Material Science
by HiTekRedNek
I know that sodium acetate is used to imitate the vinegar taste in foods,like potato chips,and that it is very effective for moisture protection when...
Views: 695, Comments: 21
Last comment 08/23/2016 by old salt
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Transport Sector's Carbon Footprint Grows

08/28/2016 posted in Automotive Technology
by Engineering360 eNewsletter
While U.S. industry has made solid strides in reducing greenhouse gas emissions over the past 25 years, the transportation sector has increased its ca...
08/28/2016 Views: 11, Comments: 0
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Solar Power 80% Cheaper Since 2010 - Large Projects Planned Across the Globe

08/27/2016 posted in Derivations
by Bayes
I came across this article in The Economist. Its sub-headline caught my attention (Solar Power is Reshaping Energy Production in the Developing World)...
08/27/2016 Views: 34, Comments: 2
Last comment 08/27/2016 by Bayes
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Engineering Lab Shakes Up Six Story Structure

08/27/2016 posted in Building & Design Blog
by Engineering360 eNewsletter
The earth is moving inside a University of California seismic engineering lab appropriately named the Center for Extreme Events Research. Rather than...
08/27/2016 Views: 48, Comments: 1
Last comment 08/27/2016 by Rixter
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Managing Deer Populations for Auto Safety

08/26/2016 posted in Animal Science
by HUSH
It’s beginning to look a lot like deer season in upstate. Lately, the county routes around my home have been swarming with deer and fawns, which...
08/26/2016 Pathfinder Tags: automotive deer ecology predator
Views: 59, Comments: 4
Last comment 08/26/2016 by Brave Sir Robin
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Floatovoltaics Marches On

08/26/2016 posted in Alternative & Renewable Energy Blog
by Jonathan Fuller
Every house in the village in which I reside is listed on the US National Register of Historic Places for “architectural significance.” Af...
08/26/2016 Pathfinder Tags: floatovoltaics solar
Views: 57, Comments: 1
Last comment 08/26/2016 by Rixter
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LEDs Get Smart with the IoT

08/26/2016 posted in Electronic Components
by Engineering360 eNewsletter
Connected lighting and the partnerships that will be required to make them more widespread are starting to gel, and big-name players are leading the w...
08/26/2016 Views: 36, Comments: 0
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Caption This for 8/26/16

08/25/2016 posted in Caption This!
by LakeGrl
This week's image: Be sure to vote for your favorite caption!
08/25/2016 Pathfinder Tags: engineering images engineers life funny images signs watches
Views: 151, Comments: 18
Last comment 08/27/2016 by SolarEagle
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Pizza Delivery By Drone Later This Year (In NZL)

08/25/2016 posted in Derivations
by Bayes
I was surprised to learn that Dominoes Pizza was already planning on trying out drone delivery in New Zealand later this year. It's becoming increasin...
08/25/2016 Views: 93, Comments: 9
Last comment 08/27/2016 by Rixter
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Hemmings Sunday Cinema – Watkins Glen Found Footage And More

08/25/2016 posted in Hemmings Motor News Blog
by dstrohl
Found footage of old race events is pretty awesome, but some of the videos put together with that footage rather lacks. Not so with the one The Chican...
08/25/2016 Pathfinder Tags: Hemmings watkins glen
Views: 61, Comments: 0
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Brain Science of Is and Es

08/25/2016 posted in Engineering Communications
by Chelsey H
It wasn’t at all surprising to learn that I was considered an extrovert when I took the Myers-Briggs in college. I’ve always loved to be w...
08/25/2016 Views: 98, Comments: 7
Last comment 08/27/2016 by truth is not a compromise
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Bioactive Film Improves How Implants Bond with Bone

08/25/2016 posted in Coatings & Surface Engineering
by Engineering360 eNewsletter
Researchers from several universities have developed a technique for coating polymer implants with a bioactive film that significantly increases bondi...
08/25/2016 Views: 25, Comments: 0
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Hemmings Find of the Day – 1952 Packard 250 Convertible

08/24/2016 posted in Hemmings Motor News Blog
by dstrohl
1952 Packard 250 convertible for sale. Find the seller’s description and more detail on Hemmings Daily.
08/24/2016 Pathfinder Tags: Hemmings packard
Views: 170, Comments: 0
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Fastener Packaging Trends: Solutions for the Bottom Line

08/24/2016 posted in Packaging & Labeling
by SavvyExacta
Lost product, costly materials, inaccuracies, and rising labor costs are among the packaging challenges fastener manufacturers face on a daily basis....
08/24/2016 Views: 80, Comments: 0
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Airbus Eyes Autonomous Aircraft

08/24/2016 posted in Aerospace Blog
by Engineering360 eNewsletter
A first prototype is scheduled for 2017, and the company is already building and testing vehicle subsystems. The goal: an autonomous flying vehicle pl...
08/24/2016 Views: 26, Comments: 1
Last comment 08/26/2016 by Rixter
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Coated Optical Fibers: Highly Functional and Durable

08/23/2016 posted in Light & Laser Blog
by SavvyExacta
Abrasive damage of optical fibers occurs when the protective coating of the fiber is scratched or scraped. This can expose or damage the integrity of...
08/23/2016 Views: 133, Comments: 0
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