RE: Contact Currents

emc-p...@ieee.org Tue, 25 Apr 2006 19:05:24 -0400

This is a multi-part message in MIME format.


IEC 61010-1 Annex A.3 has a test circuit for measuring accessible current at
high frequencies.  This is the circuit model for the leakage test resulting in
RF burns.  It is originally derived from IEC 2745/2000.


If your question is more general, you can see Tissue Dielectric Properties on
the FCC web site: http://www.fcc.gov/fcc-bin/dielec.sh

This list of tissue types in this calculator is somewhat disturbing to read.


Regards,

Doug Powell, Staff Engineer, CSA Category Liaison
Corporate Compliance Dept.
Advanced Energy Industries Inc.
 

From: John Woodgate [mailto:j...@jmwa.demon.co.uk] 
Sent: Tuesday, April 25, 2006 9:51 AM
To: EMC-PSTC@listserv.ieee.org
Subject: Re: Contact Currents

In message 
<off9d6ad71.4bedcbe2-on8625715b.00537453-8625715b.0054e...@mmm.com>, 
dated Tue, 25 Apr 2006, rehel...@mmm.com writes
>My question is: Does any one know of a human body network or circuit 
>that goes higher in frequency or know of a measuring 
>technique/procedure for higher frequency contact currents? I am 
>particularly interested in measuring contact current at 13.56 MHz (RFID).

IEC/EN 60990 is a 'derived' standard. The true sources are IEC 60479-1 
and -2 and IEC 61140. If none of those help, try IEC 60215.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
2006 is YMMVI- Your mileage may vary immensely.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-

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Title: RE: Contact Currents

IEC 61010-1 Annex A.3 has a test circuit for measuring accessible current at high frequencies. This is the circuit model for the leakage test resulting in RF burns. It is originally derived from IEC 2745/2000.

If your question is more general, you can see Tissue Dielectric Properties on the FCC web site: http://www.fcc.gov/fcc-bin/dielec.sh

This list of tissue types in this calculator is somewhat disturbing to read.

Regards,

Doug Powell, Staff Engineer, CSA Category Liaison
Corporate Compliance Dept.
Advanced Energy Industries Inc.

-----Original Message-----
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Tuesday, April 25, 2006 9:51 AM
To: EMC-PSTC@listserv.ieee.org
Subject: Re: Contact Currents

In message
<off9d6ad71.4bedcbe2-on8625715b.00537453-8625715b.0054e...@mmm.com>,
dated Tue, 25 Apr 2006, rehel...@mmm.com writes
>My question is: Does any one know of a human body network or circuit
>that goes higher in frequency or know of a measuring
>technique/procedure for higher frequency contact currents? I am
>particularly interested in measuring contact current at 13.56 MHz (RFID).

IEC/EN 60990 is a 'derived' standard. The true sources are IEC 60479-1
and -2 and IEC 61140. If none of those help, try IEC 60215.
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
2006 is YMMVI- Your mileage may vary immensely.

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-
----------------------------------------------------------------
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