How To Measure A Capacitor With An Oscilloscope.




What do you think about this video?

Leonard Legg: One probably needs to know that T does not stand for time (persay) It is a greek symbol called tau. It is derived from RC and it takes 10 tau for a capacitor to fully charge. But a capacitor charges to 63.2% of the total charge voltage in 1 tau. That gives you a rule to work with for this calculation. So in this operation you are measuring tau (in time)on the scope and using that figure to calculate C. Just sayin.

Haroon Christopher: Do you have a video on VI characteristics of diode on Oscilloscope and rectification verification of bridge circuits on oscilloscope, kindly send its url.

Dog Rox: Hi, I have a question now that I've been trying to play with that on my scope, I have an SDS 1000 series scope from Siglent and is one thing I can't figure out how to do yet, is to get both the X cursors and the Y cursors on the screen at the same time. Yes I am very new to oscilloscopes, I'm learning as I go along. It seems I can only get either the X or the Y on the screen but never both the same time. Am I missing something or is this one of the features lacking in this particular scope?

Donald McVey: Very methodical procedure and therefor a very good tutorial. I appreciated and enjoyed watching!

Tommy N: Great video! Thanks!

Dog Rox: I know this is an old video but I found it very educational. I really appreciate this video. Also I read what Andre said in his comment. That does make a lot of sense what he said. But still I did learn quite a lot of this video I'm going to experiment with that myself. thanks for the tutorial. :-)

Chris Kreitlein: I am a beginner with the oscilloscope ... and I am a teacher (both high school and adults at night school). Your delivery and explanations are outstanding. I rarely see an instructor deliver the sort of simple detail that a beginner needs....but you, my friend, did. Thank you and congrats.

Digger D: I'm cutting your film budget in half ;)  Now you will have to do your videos in half the time.  But well done anyway.

Digger D: I find large discrepancies between an LCR meter and a DMM on electrolytic capacitors and will use this method to check and see which is closer - of course frequency comes into play.  Have you noticed this?  Measure on DMM and then LCR and compare results.  Again only on electrolytic types for the most part.

robertpk: @mjlorton, on the background, I see that you have a AIM-TTI generator, why did you choose it over for example Rigol series?

lnpilot: So: get a $2000 oscilloscope and a $500 function generator and fiddle 10 minutes to measure each capacitor with crappy accuracy vs. getting a $200 LCR meter and spending 2 seconds per capacitor and getting accurate measurements...

Charlie Anstedt: what is the racetrack on the side of the cap,?

Jaack McMahon: The resistance value on bottom of calculation written wrong.
Value was said to be 1 meg in series of res. box of + 1K ohm = 1,000,000 + 1,000,=
1,001,000 should give you 5.99 pf

jon123423: I enjoyed it when it was out of range. I am using a very cheap LCR with ESR meter (you can even test in circuit) from china and it offers many other functions like diode, transistor and resistor measurement - its quite accurate too. I wanted to buy a an oscilloscope but i only do basic amp repairs so do i really need it; am not sure? BTW, Your videos are very interesting and I like learning the theory part of electronics - your explanation is very easy to understand and am not very bright; keep up the good work!

Владимир Кузнецов: good
Thanks Martin

sachin dongiri: your videos are useful for me....please clearly explain about connection....

eg: connection black to ground; connect this wire here...

Ahmed Almaghasilah: That's great !  So you said 63.2% for the capacitor, is that the same for inductor?  I am trying to measure an inductance of dc motor, do you think would it work if I use the same method here putting in mind that I am measuring inductance?

Alan Spicer: Nice video ... I've not yet owned an oscilloscope of my own, but have been thinking about it. It seems to me way back in electronics in high school or such there was a way to check a transistor (a diode?) with a scope. If so maybe another video?

monolyth421: This video is 45 minutes longer than it needs to be.

LJacyHenry: It's painful to watch you do math this way. Try using engineering notation for your values, it will simplify your life.

Rating:
How to measure a capacitor with an oscilloscope. 5 out of 5

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How to measure a capacitor with an oscilloscope.