Bypass caps

• #25 Reply
  Posted by uncle_bob on 30 Apr, 2016 21:56
• Hi
  
  One of the things that the Murata manual shows are plots of the field around the power traces. Dave has a set of probes (and an amp) that pop up in various videos. They are very useful (and a bit pricy) for figuring this sort of thing out.
  
  Bob
  
• #26 Reply
  Posted by jnz on 03 May, 2016 14:55
• Quote from: timb on 30 Apr, 2016 20:11

  Here's pretty much all you could ever want to know about bypass caps, from Murata: http://www.murata.com/~/media/webrenewal/support/library/catalog/products/emc/emifil/c39e.ashx
  

  
  That's a really great link! Worth the read.
• #27 Reply
  Posted by dannyf on 03 May, 2016 15:55
• Quote

  how do you make these decisions?

  
  All you need to make sure is that the bypass cap is sufficiently fast - they are there for the transients. I have a ton of .1uf but sometimes I have used small eletrolytics as well.