Re: Tingles from power supply

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#1513

From: Dirk Bruere at NeoPax
Date: Sun, 08 Mar 2009 14:54

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Sylvia Else wrote:
> Sylvia Else wrote:
>> I've recently bought a D-Link DIR-300 wireless router. While 
>> disconnecting its power supply from it, I got a tingling sensation 
>> when I touched the plug (to be clear, I'm talking about the 5V DC 
>> plug, not the mains plug).
>>
>> An AVO meter shows about 90V AC to earth from either side of the 5V 
>> plug. Short circuit current to earth is about 0.1mA.
>>
>> Still, I thought these things were meant to be completely isolated. 
>> Has there been a change of approach?
>>
>> Sylvia.
> 
> Apparently it's normal, and is related to RFI suppression.

Sounds like a small cap from mains.

-- 
Dirk

http://www.transcendence.me.uk/ - Transcendence UK
http://www.theconsensus.org/ - A UK political party
http://www.onetribe.me.uk/wordpress/?cat=5 - Our podcasts on weird stuff

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From: Dirk Bruere at NeoPax <dirk.bruere@gmail.com>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: Tingles from power supply
Date: Sun, 08 Mar 2009 14:54:35 +0000
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