jea48

Responses from jea48

Shielding components from EMI/RFI... Help please
Bryon,You might want to do some research on the archives of Tweakers' Asylum regarding the use of ferrous, magnetic, materials. There may be better ways to shield for EMI.Search shielding for EMIhttp://www.hottconsultants.com/pdf_files/ground.pdfh... 
IC Failure
Touch one lead probe of the meter on the outer shell of one RCA plug, the other meter lead probe on the outer shell of the other RCA plug. You should read continuity.Do the same test on the center hot pin of the RCA plugs. You should read continui... 
Shielding components from EMI/RFI... Help please
Almarg, I've always wondered about the code to use only one ground rod as well. I have never heard an explanation. 02-14-12: Sarcher30Sarcher30,There is no limit of the maximum number of grounding electrodes (ground rods), only the minimum require... 
Shielding components from EMI/RFI... Help please
Neither of those scenarios seems applicable to what Bryon was doing with the second ground rod, assuming that the means of insulation between the Reclocker and the Sonos and their grounded enclosures is sufficient to withstand the voltage that wou... 
IC Failure
More than likely the cable has an open connection.More than likely at one of the RCA male plug connectors.Bending the cable too sharply near the end can cause a connection to break free.If the ends are the type that can be disassembled, carefully ... 
Shielding components from EMI/RFI... Help please
Bryoncunningham,What's with the dedicated ground rod buried under the house?The earth does not possess some mystical magical power that will suck, drain, RFI to it.What you have created is a great path for a lightning strike to follow. There is a ... 
Ungrounded power cord: Will I die?
Eugene81,>http://db.audioasylum.com/mhtml/m.html?forum=amp&n=156311&highlight=Floating+Ground+Does+It+Cause+Damage?&r=&search_url=%2Fcgi%2Fsearch.mpl%3Fsession%3D20110701060759%26SelectForumvinyl%3Dvinyl%26SelectForumvinyl%3Dvin... 
Quick Dedicated Line Question?
Yes.....That is if you want true dedicated circuits.Conductors that occupy the the same raceway will pick up common EMI/RFI interference.Also if you do go with a single conduit make sure the electrician does not give you 2 separate circuits, multi... 
Ungrounded power cord: Will I die?
Herman,Sorry bout that.... I meant EI....If the shield is tied to the neutral and the neutral line is tied back to earth ground I'm not sure if the lack of the 3rd line makes a difference, but I don't think all countries use polarized plugs with t... 
Ungrounded power cord: Will I die?
I was wrong and Elizabeth is right. The risk of death or injury from floating a ground is so low it is not a practical concern.I apologize for my previous comment.01-29-12: HermanSorry, to broad of a statement.If the OP's cord in question was used... 
Ungrounded power cord: Will I die?
That is a universal 100-240 switching supply. Since outlets in many countries don't have a 3rd prong for ground it would have to be designed to not need one.01-28-12: Herman Herman,You could be right..... I checked the Net for an owners manual for... 
Ungrounded power cord: Will I die?
Anyway, I have a 2-prong power cord with a 3-prong IEC female end that came with my Luxman amp. Eugene81That is just one of the problems with IEC connectors. For some reason here in the USA IEC connectors have next to no safety standard rules/requ... 
Isolation transformer - getting full, rated kva
It's 220/440-120/240.01-04-12: NgjockeyNgjockey,If that is indeed the case, and each primary winding is wound for 220V and the secondary will output 120/240V then I would first bench test the xfmr. Good chance the voltage at his service electrical... 
power cable length importance
The power for a typical residential house starts at the utility power transformer, that is after all a split phase isolation transformer. Or as some call balanced power....A power cord is an extension of the leads of the primary winding of the pow... 
power cable length importance
Depends on the manufacturer's design of the PC. Is the cable shielded and how it is designed to block RFI/EMI from entering or exiting the equipment it is connected to.Since a power cord is composed of a hot and neutral wire that the component sit...