Good point - should have been more explicit . Use of caps should be well tested and limited to the input. Changes to output capacitance could also affect control loop zeros and poles.
If nothing is transferred between C and L, there is no resonance, so a perfect power source is the theoretical answer for the lazy non-thoughtful engineer. Brian -----Original Message----- From: Doug Smith [mailto:[email protected]] Sent: Monday, December 01, 2014 1:41 PM To: Brian Oconnell Cc: [email protected] Subject: Re: [PSES] Noisy DC / DC converter Hi Brian, One needs to be a little careful with caps on the output. I have seen many cases where they form a resonant circuit with the inductance of wires connected to the supply and make the problem even worse. How about a puzzle? How do you make a non-resonant capacitor using three components? Doug - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
