RE: FW: [Fwd: [SI-LIST] : Copper balance] {Venting of PCBs}

Larry, I had no idea there even WAS such a standard. Interesting, the things it's possible to learn here; an assemblage of experts, indeed! Thanks! Cortland == Original Message Follows Date: 24-Jan-01 15:19:07 MsgID: 1078-329 ToID: 72146,373

RE: Decoupling Capacitors

Chris, Thank you for the interesting story. Unfortunately this case is not all that unusual. About a decade or so ago (names have been changed to protect the guilty) I was working in the hardware engineering group at a company that had just instituted an aggressive cost-reduction program.

RE: Lights for 3-meter Chamber

I should have been a bit less negative about fluorescent lights. Certainly, you can wire several fluorescent fixtures in your room to a switch, so that you can take advantage of their inherent glare-free quality and the fact that they produce much less heat. When the power is switched off, they

Safety in Oregon

Dear colleagues, I would like to know if UL mark (or other certification mark) is required, or mandatory in Oregon state, for safety purpose. This applies to a laboratory equipment (spectrometer). If you know some web links, I'll appreciate them. Thanks a lot for your cooperation,

Re: IEC 606010-1-2

It is the same as 60601-1-2; 1993, i.e. CISPR 11, class A or B depending on the environment. Best regards, Jim owner-emc-p...@ieee.org wrote on 1/25/01 2:34 pm: Any advance info on conducted emissions for the new standard? thnx Brian O'Connell Taiyo Yuden (USA), Inc.

Periphery ESD ground rings on high speed interface cards

Greetings all. I have a general question about the use of isolated ground rings at the periphery of rack type optical interface cards (so maybe it's specific). My understanding is that isolated (fully moated) ground rings are often placed around the edges of high speed interface cards in