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Messages - brownj4

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How Do I? Beginner's Paradise. / Re: Which Capacitor Types Should I use
« on: February 09, 2013, 06:49:35 PM »
WOW!  All the information I was looking for, and more!  Thank you all for helping me out.  Hopefully this will help others out as they get started as well. 

I'm ok when it comes to conversions from uF to nF or pF, but when there's several different types of caps with the same ratings, I start to question what to use.  This has definitely straightened things out for me.  Looking forward to showing off some successful builds!



PS. Paul, my degree is in Chemical Engineering, but I work at a Nuclear Plant as a jack-of-all-trades Engineer that helps to keep everything running smoothly from day to day.  Lots to learn, and new challenges every day..... but building circuits that I can use on my pedalboard isn't something I really get to work on during the day  ;)

How Do I? Beginner's Paradise. / Which Capacitor Types Should I use
« on: February 09, 2013, 02:31:36 PM »
Hi Everyone,

I'm finally moving on from BYOC kits and am trying to build some pedals using madbean PCBs and ordering all the components myself. 

I've searched these forums for a while and can't seem to find the answer to my question regarding capacitor types.

As an Engineer - though not an Electrical Engineer, hence the capacitor questions - I might be over analysing this one.  But in any case, I'm hoping someone can help lead me down the right path.

1. There are 3 "types" of capacitors I have seen on the madbean PCB layout drawings:  Circular, Rectangular, and Oval.  What does this represent in terms of the type of cap to use?  I haven't seen this info. anywhere.

2.  I am building a Bill Of Materials for a Runt, and have noticed that certain capacitor values span different types of caps.  For example, at Mammoth Electronics you can get a 0.0033uF cap as a 100V polyfilm cap, 630V polyfilm cap, and also as a 3300pF 50V ceramic cap.  In situations where there is overlap between 2 or 3 different types of capacitors, what should be used?  Or does it matter?

If this info. is already somewhere else, please feel free to just direct me there.



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