Re: [PSES] Interference Caused by Microwave Oven

Hi Ken, I suspect that the health impact of the microwave popcorn far exceed the leakage from the oven. This stuff is bad, not fit for human consumption. Doug Douglas C. Smith University of Oxford Tutor Department for Continuing Education Oxford, Oxfordshire

Re: [PSES] EMC and Data Center

Monrad: My idea of treating the data center as one big box seems to be consistent from an engineering viewpoint, but may not be acceptable to the lawyers who approve the work. It seems to me that, once you establish that you have a bi-directional loss of maybe 100 dB due to a shielded enclosure

Re: [PSES] Interference Caused by Microwave Oven

I would have thought that the output cap on a switcher would be smaller than the cap for rectified ac line, just due to what it takes to deliver the same amount of ripple potential. Ken Javor Phone: (256) 650-5261 From: Ken Javor Date: Fri, 15 May 2015 16:43:36 -0700 To: Conversation: [PSES]

Re: [PSES] Interference Caused by Microwave Oven

One-half sine wave is 8/10 ms, and even that seems like a lot of hold-up time for an HV capacitor and several hundred Watts dissipated. Even at 8 ms, the time between depressing the switch and opening the door is going to be longer than that. Ken Javor Phone: (256) 650-5261 From: Ed Price Rep

Re: [PSES] UL HTTPS

Yes sir, that is what members have said (off line), so looked at what DNS was resolving too and noticed several "jumps' for the IP for a given URL (one poor soul said that he had a 50% 'fail' getting into the CDA). Many thanks to the members that responded on and off line. Long live the emperor,

Re: [PSES] Accreditation for standard comprehension?

ISO 17025 (General requirements for the competence of testing and calibration laboratories) has some requirements related to knowing what you’re doing. Regards, Peter Tarver *From:* Brian Gregory [mailto:brian_greg...@netzero.net] *Sent:* Wednesday, May 13, 2015 11:30 *To:* EMC-PSTC@LIST

Re: [PSES] UL HTTPS

UL recently changed a number of URLs and other items, probably as a matter normal churn. Several bookmarks no longer worked. This is probably a related thing that they'll work through in time. Regards, Peter Tarver > -Original Message- > From: Brian Oconnell > Sent: Friday, May 15, 20

Re: [PSES] Interference Caused by Microwave Oven

I was wondering the same regarding “capacitor hold-up” keeping the magnetron working for up to a half sine. As for the radio astronomy frequency allocations, here is the internationally recognized list: http://www.astrosurf.com/luxorion/radioastro-frequencieslist.htm

Re: [PSES] Interference Caused by Microwave Oven

Old microwave ovens (like the one from 1988) were electrically quite simple; a relay applied AC power to a step-up transformer, and the secondary output was grounded (one side) and connected to a diode (other side). The diode allowed a low-capacitance HV capacitor to charge and the magnetron to pro

[PSES] Oven Sinicism

Yes, it's Friday, so let's route all this into its own Sinicism thread! Ed Price WB6WSN Chula Vista, CA USA -Original Message- From: dward [mailto:dw...@pctestlab.com] Sent: Friday, May 15, 2015 12:34 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Interference Caused by Microwave O

Re: [PSES] UL HTTPS

I accessed the CDA site through the MyHome site and I had a secure connection the whole time. I checked a number of features at the CDA and ran into nothing resembling what you are describing. For reference purposes, I'm running Internet Explorer from the Windows 8.1 operating system. I also tri

Re: [PSES] Interference Caused by Microwave Oven

It's there, keep looking. :) ​ Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, Inc., and is intended for the exclusive use of the recipient(s) named above. It may contain information that is confidential and/or legally privileged.

Re: [PSES] UL HTTPS

I use this every day and It is working properly for me Sam Yoga Crestron -Original Message- From: Brian Oconnell [mailto:oconne...@tamuracorp.com] Sent: Friday, May 15, 2015 3:39 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] UL HTTPS Anyone know what is with UL's CDA site? Seems to

Re: [PSES] Interference Caused by Microwave Oven

Apologies to John for inferring a problem with certain areas of the manufacturing world. ​ Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, Inc., and is intended for the exclusive use of the recipient(s) named above. It may contain

Re: [PSES] Interference Caused by Microwave Oven

Clever etymology, but incorrect, at least politically. Ken Javor Phone: (256) 650-5261 > From: dward > Date: Fri, 15 May 2015 12:34:04 -0700 > To: 'Ken Javor' , > Subject: RE: [PSES] Interference Caused by Microwave Oven > > Sinicism - a word made up from Latin for Chinese (sinicus) and Greek

Re: [PSES] Interference Caused by Microwave Oven

Hmm -odd - It's not in my dictionary - or online! Best Regards Charles Grasso Compliance Engineer Echostar Communications (w) 303-706-5467 (c) 303-204-2974 (t) 3032042...@vtext.com (e) charles.gra...@echostar.com (e2) chasgra...@gmail.com -Original Message- From: dward [mailto:dw...@pcte

Re: [PSES] EMC and Data Center

An entire data center? There are regulatory companies that would do onsite testing - but what standard would you apply (by that I mean specification levels).?? Best Regards Charles Grasso Compliance Engineer Echostar Communications (w) 303-706-5467 (c) 303-204-2974 (t) 3032042...@vtext.com (e)

[PSES] UL HTTPS

Anyone know what is with UL's CDA site? Seems to have lost the secure connect for last several days. The pages seem only partially encrypted or perhaps mixed scripts, but cannot detect anything using inspect mode on browser. Hopefully they just need to renew cert. Sent email to them several day

Re: [PSES] Interference Caused by Microwave Oven

Sinicism - a word made up from Latin for Chinese (sinicus) and Greek for belief, ideology or style (ism). Meaning - a Chinese method or style extended meaning - a certain negative belief about products made in China - of which may result in missing the good things. ​ Dennis Ward This communi

Re: [PSES] Interference Caused by Microwave Oven

And I'm not disappointed. Ken Javor Phone: (256) 650-5261 > From: John Woodgate > Reply-To: John Woodgate > Date: Fri, 15 May 2015 19:50:26 +0100 > To: > Subject: Re: [PSES] Interference Caused by Microwave Oven > > In message <002e01d08f35$4068c0f0$c13a42d0$@pctestlab.com>, dated Fri, > 15

Re: [PSES] Interference Caused by Microwave Oven

In message <002e01d08f35$4068c0f0$c13a42d0$@pctestlab.com>, dated Fri, 15 May 2015, dward writes: May your Sinicism not cause you to miss the good things in life. I'm not Chinese! And I'm not of the canine persuasion, which is what the word you aimed at originally alluded to. -- OOO - Own

Re: [PSES] Interference Caused by Microwave Oven

I can't wait for the response to this post! Ken Javor Phone: (256) 650-5261 > From: dward > Reply-To: dward > Date: Fri, 15 May 2015 10:33:26 -0700 > To: > Subject: Re: [PSES] Interference Caused by Microwave Oven > > May your Sinicism not cause you to miss the good things in life. > >

Re: [PSES] Interference Caused by Microwave Oven

May your Sinicism not cause you to miss the good things in life. ​ Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, Inc., and is intended for the exclusive use of the recipient(s) named above. It may contain information that is con

Re: [PSES] Interference Caused by Microwave Oven

In message <002701d08f2c$fbcc7d40$f36577c0$@pctestlab.com>, dated Fri, 15 May 2015, dward writes: The fact that this seems an anomaly says the Bayesian probability is satisfied by reason and uniformity - that being, there are more satisfactorily operating devices than lemons. May you never

Re: [PSES] Interference Caused by Microwave Oven

Hi All, I recently wrote an article on wireless interference, with microwave ovens being one source of that interference. Fortunately, the use cycle of microwave ovens is relatively short, so any interference is short-term. However, any leakage is certainly an issue for those standing nearby -

Re: [PSES] Interference Caused by Microwave Oven

The fact that this seems an anomaly says the Bayesian probability is satisfied by reason and uniformity - that being, there are more satisfactorily operating devices than lemons. ​ Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, I

Re: [PSES] Interference Caused by Microwave Oven

In message <001001d08f24$621e6c60$265b4520$@pctestlab.com>, dated Fri, 15 May 2015, dward writes: The solution to that is simple - get a new microwave but don't buy the same brand. :) What is the Bayesian probability that the new brand will be worse? (;-) -- OOO - Own Opinions Only. With bes

Re: [PSES] Interference Caused by Microwave Oven

The solution to that is simple - get a new microwave but don't buy the same brand. :) ​ Dennis Ward This communication and its attachements contain information from PCTEST Engineering Laboratory, Inc., and is intended for the exclusive use of the recipient(s) named above. It may contain in

Re: [PSES] Interference Caused by Microwave Oven

My microwave oven used correctly interferes with wi-fi and Bluetooth, but with blue tooth if I bring the devices close together I can overpower the incidental oven radiation, right next to the oven. I can't do that with wi-fi at home, because of the fixed location of the wi-fi base station at the

Re: [PSES] [External] Re: [PSES] Interference Caused by Microwave Oven

It's possible the noise quite soon after the door is opened is still below the limit for unintentional or incidental emitters. That's enough to interfere with radiotelescopes. Cortland Richmond -Original Message- >From: "Wiseman, Joshua E BIS" >Sent: May 15, 2015 8:55 AM >To: EMC-PSTC@

Re: [PSES] [External] Re: [PSES] Interference Caused by Microwave Oven

IEC/EN 60335-2-25 and IEC/EN 60335-2-90 have limits on the radiation emitted from the microwave with the door open. This includes testing with the seal broken and the door closed, when possible. The limits are pretty strict so I would be a little surprised by this. I haven’t read the article,

Re: [PSES] Interference Caused by Microwave Oven

In message .com>, dated Thu, 14 May 2015, Brian Oconnell writes: Think that CISPR32 is supposed to address very short-term stuff, but since is not recurring and periodic, would a few hundred mSec affect test limits? CISPR 32 doesn't apply to microwave ovens: CISPR 11 applies. -- OOO - Own

Re: [PSES] Interference Caused by Microwave Oven

This isn't a particularly helpful contribution, but when I use my microwave (used correctly, with the door closed), my Bluetooth speaker completely stops working and any WiFi activity grinds to a halt. I try to keep the kids away from the microwave when it's in use, as much as I can. Michael.