Pressure-Activated Buttons

Hi everyone,

I'm a product design student and I'm currently working on a project designing a new personal alarm worn on the wrist. I want the alarm to be activated by applying a pressure on two 'buttons' so the buttons can only react if the specified force on the buttons have been r

March Military Campaign: WWII Tank Transporters

Commenter Timothy Wade chided us earlier this year (good-naturedly, of course) for not doing our research on the Mack T8 double-ender tank transporter that we linked to on BigLorryBlog. Well, the perfect time to present the findings of said research is now, the day we kick off our fourth annual

Why are Electric Meters Grounded Street-Side?

I live in a suburb of Chicago where homes were built with the usual grounding on the house side of the meter. Now when selling or buying a home here the city inspector requires that the meter be grounded on the street side. what is the reasoning for this? doesn't the bare or neutral wire coming int

Job Openings in India

Hello together,

maybe someone is interessted in an Project/Joboffer.

We allready get some interessting CV´s from this Forum and i want to thank all people that write us.

We are an engineering sevice contractor / placement Agency in germany an looking for in

Solution Concentration

3.00mL of a 0.984 M CuSO4 solution is diluted to 50.00mL in a volumetric flask. Is the concentration of the new solution
a. 2.95 M
b. 0.177 M
c. 0.0590 M
d. 0.0197 M

please help, i am fairly new to chemistry, I dont know how to work this ou

Expanding Tube to Tube Sheet Connections

Our standard practice is to first expand the tube in the tubesheet and weld afterwards. This expansion has a rate of only 5%.

Now we have a question from our supplier to first weld and expand the tube afterwards.

We think our own standard is the best procedure because an expansion

Ball Valve Seat Damage

Hi,

I have a isolation valve - 8" ball in 80 bar pressure. Is the valve seat or seal will get damaged while opening this valve due to high differtial pressure, in upstream 80 bar & downstram 0 bar. Or pressure equalisation line is required across the main valve.

Kindly advice m

Air Cleaner for Spray Painting

Can anyone assist me in the selection of the correct air exhaust/cleaning system for a spray painting area? Please note that an economical solution is favourable utilising special filters (if available) and exhaust fans suitable for use with VOCs instead of a complex and expensive solution with rege

PLC RSLogix 5/20 Interface Problem

One of our production line runs on an old RSLogix 5/20 PLC, the interface coms cable is a 25 pin male to 9 pin female. The laptop I'm using (Lenovo T61 ThinkPad) dose not have a 9 pin male com port. I'm looking at the option of connecting a USB to Serial Port Adaptor (9 pin) to the exsisting femal

Battery Terminals

sir,

please send me the internal circuit diagram of charger and explain its working

why there r three terminals in nokia battery and four terminals in motorola battery

Variable Speed Air Compressor

Hi everyone,

we are considering the purchase a large BOGE air compressor type SO181A, variable speed type. The price is rather lower than that from other competitors, so we suspect this might be related to lower quality. Does anyone have any experience, good or bad, with BOGE air compressors?