Stepper Motor Selection

Hi guys, I am trying to build a carousel-like structure for my application. I intend to use a stepper motor which will bear the load of an aluminium plate (2kg approx), on top of which I'll be placing beakers resulting in a total of 3 Kg load on the stepper.. bearing these in mind what specs shou

ATS

How can I find information about "Automatic Transfer Switch" , about theory, basic information and how simply to make a design on a PLC.Thanks.

Horizontal Displacement of Dome Ring Beam

If the horizontal displacement of a steel reinforced dome ring beam is a function of 1/E, could you make a case for the E of the composite beam (Ecomp) being found thus: As * Es + Ac * Ec = Acomp * Ecomp, where As = Area of steel, Es = Modulus of Elasticity of steel, etc.?

10 Crazy Medical Inventions That Never Caught On

From Neatorama:

Mark of the blog Life Support has pictures and descriptions of ten unusual medical inventions that were either pointless or dangerous to anyone who would use them. Among them is the 1935 Old Age Rejuvenator Centrifuge, which claims to reverse the effects of aging b

Island Chosen for Nuclear Plant

From BBC News | Science & Environment | UK Edition:

The UK's next nuclear power plant could be built on the island of Anglesey by 2020. Horizon Nuclear Power says it will apply for planning consent in 2012 to build a reactor on the island to produce up to 3,300Mw of electricity.

Calculating Outer Diameter of Pipe

Isit possible to calculate the outer diameter of a pipe using the parameters like flowrate, velocity etc.,without calculating the ID of the pipe??.

Since there is an two formulae in ASME B31.1 for calculating the thickness of the pipe using inner diameter and outerdiameter as well.Plz let m

Area 51 Vets Speak

From Boing Boing:

Roadrunners Internationale is a group of individuals who in the 1960s and 1970s worked at Area 51, the "secret" military facility in Nevada that is ground zero for some conspiracy theorists, UFO "believers," and black budget aircraft trainspotters. According to th

Medical Aid for Haiti

Help for Haiti in the aftermath of a devastating earthquake in January came from various sources, including the medical device sector. Manufacturers large and small have donated funds and an array of products. Medtronic Inc. pledged $1 million and will match employee donations up to $250,000. Surgic

Follow the Money

Oh, the difference a year makes. In Spring 2009, engineering editorials wrote with concern about outsourcing/off-shoring of production jobs expanding to relocate engineering and other service jobs. Spring forward to 2010: press clippings say that manufacturers are rethinking their off-shoring commit

Sheet Metal Bending Calculations…help

Hi;

Recently i have been using CATIA as my 3D modelling tool for sheet metal designing.I am now experiencing problems in final manufacturing due to the development drawings created for sheet metal cutting & bending.For example I have to bend a sheet into L-Shape where its vertical Height

ABB REF542 Plug Motor Feeder Protection Relay

My work place using the ABB REF542 plug motor feeder protection relay for the 11 to 6.6 KV motor, and this protection system in serial with instrument protection (motor winding RTD trip function).

Happen few time the motor operate at full load condition, and the RTD protection drive give th