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Recent Questions & Answers |
| Cable Size for Power Generated from Solar |
| By zawa in Electrical Engineering |
Dear all, We are going to install solar field of 24kWp of 4 strings. Since it is 4 strings/block, the arrangement for the phases would be L1 = 12kW, L2 = 6kW, L3 = 6kW The Cable length would be 310 meters ( it is quite far, we want to connect to our site office) If I were to use 4x75mm² Cu or 4 ... more |
| Can Someone Supply a Small RF Amp That Provides a Decent Gain From Khz to Ghz |
| By ROAR in Communications & Electronics |
I've tried to buy a couple from several sources and the factorys with no results! I'm thinking of the AD8354 that provides 19 dB from one mHz to 2.7gHz at 3+/-VDc@23Ma. They come in rolls of 3000at ONLY $1400! a bt much for my little R&D |
| Medical Instruments Tracking Software |
| By irelandeng in Software & Programming |
I have been asked to supply tracking software for medical instruments as they are used and reprocessed in a hospital enviornment. Of course there are many commercial solutions that are available but what I need is OEM software. This would become my own software and I can resell. I tried all the norm ... more |
| Paralleling Diesel Generators |
| By Instrumenttech in Electrical Engineering |
Hi , I work for a utility where we use diesel power generation. Our plants consist of 3 CAT diesel generators equiped with PMGs. We currently use the Basler SSR 63-12 voltage regulator in a cross current compensation configuration for three generators. I would like to start using the CAT digital vol ... more |
| Chimney For Wood Stove Up-Date |
| By NSS in General Discussion |
In a earlier thread: http://cr4.globalspec.com/ |
| ASME Fabrication Tolerance |
| By nbhide108 in Mechanical Engineering |
Need to know what are the mandatory fabrication tolerances required for static equipment designed as per rules of ASME Section VIII Dev 1 Tolerances for allowable variation in nozzle location, nozzle projection, orientation, welds, supports location, support orientation, overall height or length of ... more |
| I Don't Know What This Is? Do You? |
| By JE in Chicago in General Discussion |
I found this little piece of metal at the edge of the road. Nobody has been able to tell me what it could be? I've passed it around to people of various trades with no luck whatsoever. No.. I'm not asking about the quarter. |
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New Blog Entries | ^ Back To Top |
| Stress Is Making Your Cells Old |
| posted in Biomedical Engineering |
Stress plays a role in both your physiological and psychological health. Physically, stress can cause gastrointestinal issues such as heartburn, nausea and upset stomach, as well as cardiovascular problems such as high blood pressure. And emotionally it's not much better. While a little stress ca ... more |
| John Frank Stevens: Engineer of the Great Northern Railway and the Panama Canal (1853-1943) |
| posted in Great Engineers & Scientists |
This engineer worked on projects ranging from building thousands of miles of railroad to putting in place the infrastructure needed to complete the Panama Canal. Although John Frank Stevens did not actually dig the canal and locks, he helped set the stage for George Washington Goethals, who work ... more |
| Releasing a LEGO Tucker Set |
| posted in Hemmings Motor News Blog |
Lego has long provided automobile-related sets, but few of them really appeal to the collector-car aficionado. There was the Volkswagen camper van from last year and a handful of Ferrari-themed sets, but little beyond that. Yes, the whole point of Lego is to spur the imagination, but wouldn't ... more |
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Latest Topics of Discussion | ^ Back To Top |
| Hardness Tester |
| By leeb in Instrumentation |
I'm going to look at one and was wondering if anyone knows how to use one so I can test. I have used a hardness tester before, long ago, but I don't know if it was an Avery, and can't quite remember the details. I think they go like this for test block of 62 HRC:Install diamond indenter.Install ... more |
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