RE: Explosive Atmosphere Safety Question

You are exactly right. I used to work on automotive fuel electrical systems about 10 years ago. The fuel meter is a current meter, measuring current between 1 to 3 mA (for the one I used). The meter input resistance is greater than 4k ohms. This is the current limit for the fuel sender unit,

RE: Shielding Effectivness Question

short waveguide. Calculate the attenuation of a waveguide operating below cutoff. The radiated emission from one aperture may seem insignificant, but when you have 100 apertures radiating in phase may cause you to fail FCC A. George Tang -Original Message- From: owner-emc-p

Re: Conductive Coating

would be twice the ohms/square of the material. -- From: Robert Macy m...@california.com To: George Tang gt...@convergenet.com, Westerdahl, Eric eric_westerd...@rollsys.com Cc: 'EMI-PS Group' emc-p...@ieee.org Subject: Re: Conductive Coating Date: Wed, Nov 3, 1999, 10:18 PM

Re: Conductive Coating

and the width are the same, you have a square. The resistance of a square of any magnitude will be the same. Now, to relate Ohms per square to the reading one gets when one sticks two probes down on it? - Robert - -Original Message- From: George Tang gt

Re: Conductive Coating

or call (972) 851-0460 George Tang Westerdahl, Eric wrote: Our company has decided to use a conductive coating to mitigate some EMI problems on one of our units. We have not used this method before. I have a question as to the correct resistivity of the coating. What range should I

Re: explanation of ESD events with coins in baggie.

as the screw driver moves away from the nickel surface to the point to cause air break down and screw driver discharge. In slow motion, this is exactly the ESD process. But in real-time, this is RF. Different perspective makes worlds of differences. :) Thanks, George Tang (Bailin Ma) wrote: George