http://forums.leaflabs.com/topic.php?id=741 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:20:29 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=741#post-4375 Wed, 20 Apr 2011 05:26:48 +0000 gbulmer 4375@http://forums.leaflabs.com/ <p>I was looking at the Maple R5 Schematic, and the power supply seems to have changed a little.<br /> The decoupling capacitors C6, C7 and C8 have increased from 0.1uF on R3 to 1uF.<br /> (Less intriguing the main regulator 'reservoir' has reduced from 47uF to 22uF, but I could imagine that is all that is needed?)</p> <p>I noted that ST Micro Application note AN2586 "STM32F10xxx hardware development"<br /> recommend Nx0.1uF + 10uF, with 0.1uF (100nF) for each power/ground pair of pins. </p> <p>0.1uF (100nF) is normal practice for any logic IC, so I am a intrigued.</p> <p>May I ask, what caused you folks to move from 0.1uF to 1uF?<br /> Would you share whatever it is you discovered? </p>