[SI-LIST] Switch mode power supply noise identification
- From: Doug Smith <doug@xxxxxxxxxx>
- To: emc-pstc <emc-pstc@xxxxxxxx>, Si-List <si-list@xxxxxxxxxxxxx>
- Date: Fri, 09 Apr 2010 23:32:56 -0700
Hi All,
I have posted my latest Technical Tidbit for April:
Technical Tidbit - April 2010
Identifying Switching Power Supply Noise in Systems
(Frequency Domain Measurements)
Abstract: Switched mode power supplies can generate significant harmonics of
such an amplitude as to cause EMC emissions problems in the 30 to 100 MHz
range and occasionally at higher frequencies. Identifying switching power
supply noise is discussed as well as one coupling method that can result in
excess radiated emissions.
The link to the article is the picture of the experimental setup at the
bottom of the home page at: http://emcesd.com[1] showing a spectrum analyzer
and a switching power supply.
Doug
-- ------------------------------------------------------- ___ _ Doug Smith
\/ ) P.O. Box 1457 ========= Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX:
408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-----( ) | o |
Email: doug@xxxxxxxxxx[2] \ _ / ] \ _ / Website: http://www.dsmith.org[3]
-------------------------------------------------------
--- Links ---
1 http://emcesd.com
2 mailto:doug@xxxxxxxxxx
3 http://www.dsmith.org
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