I rigged up an instrumentation amplifier circuit using LM324N(4 opamps on one chip). I chose the value of resistors such that the circuit would give an amplification of 620. But when I tested the output on the CRO and found the gain manually, the gain turned out to be mere 150!!! I used 3 opamps and

Adhesive tape for bonding textile reinforced fabric with transparent vinyl membrane.

Just starting a new project that involves production of PVC roll up blinds.

I know how to heat weld and HF weld PVC membrane but understand it may also be possible to use heat or pressure activated

I worked in a factory producing parts motor.I wear a stainless steel base material. My Customers want stainless steel like a rainbow-colored shades of blue, red and brown.I've tried to burn with fire.But the results are not shiny. Can you tell me how should it is?

What is the recommended fouling factor for air cooled chillers? as per the ARI or ASHARE standards? Thanks

I have heard that newspapers are really good for cleaning windows. Most people say it is because the paper it is printed on is very soft and leaves behind no lint, but I have heard that it is really because of the ink in the paper. Some say that the ink can "absorb" dirt and finger prints. Does an

Can we test the floating ball valves in any position either horizontal or vertical. Is there any comments in API6D or in API598 relating this.

For eg: 1" # 150 FBV RF FB Handle operated.

what is the power of 1 ton unit in kw?any one can help me

I'm having problems locating info. on value of ca160 I'm looking at. Could you give me a figure on the value of an unrestored, original, low milage model?

Is an agitator an input for a plc?

Some day ago, in a tv show there were a debate about nanotechnologies , and when they get to the future of digital memory (due to the physical restrains) some suggested that a eventual development would be to control the spin of electrons of ones and zeros.

I am not a genius of physic ,

I have recently begun making a windmill and was going to use the dimensions at "http://www.thebackshed.com/windmill/Docs/Furling.asp" but recently when I went back the site was unavailable. Would anyone have a saved copy of that web page or diagrams

Dear Sir

I am a Post-Doc student and I am developing research works in adhesive joints with nano-enhanced glue in Portsmouth University-UK.

I want to add nanoclays specially modified, by chemical treatments, in the glue.

After the nano-processed adhesive will be applied in struc

Does a Multi function Meter CT's (Connected directly to meter Induvidually) require a earthing?

I have to design a multilayer vessel, can somebody describe the procedure for designing the same.(either shrink fit of shrinkage fit)

Does PVElite use moss's formulas for calculation of surface areas and weights?

Because using the surface area given in the calculation of PVElite if we calculate the weight . W= Area*thickness* density, it does not match with the weight calculated by PVElite.

iam designing aportable air cool chiller for a small room of size 3x3 m2 , as a graduation project .My question is how do i calculate the capacity of my air chiller ? how to calcualte the blower and heat exchanger size ? what is the proper place for the blower ? i have used a simple water cooler sys

My dear friends, I am a fresh man in this forum, I would like to find the buyers of the welding material, is there anybody can give me some information? Thank you in advance

What is the advantage of EN41B (BS 970 905 M39) over EN19 (BS 970 709 M40) as far as nitrocarburizing is concerned?

I searched on net but no definite difference is found.

Please help.

what is the Knee voltage ,Maximum magnetising current of a CT (Class PS,800-400/0.577) for differentIAL PROTECTION......

I am a civil & structural engineer and have seen numerous bldg plans and read numerous books. Is it good to design a RC Structure based on the Strength of Materials and percentage of Steel reinforcement and concrete grade only ?

Most engineers design are alike, even though they used CAD and m