Thanks Larry - nice summary of ESR, loss tangent and dissipation factor.
@w0qe
6 жыл бұрын
Thanks. The next video gets to the good stuff!
@franzliszt3195
5 ай бұрын
Great
@mgberry
6 жыл бұрын
Incredibly helpful...thanks!
@JoseSilveira-newhandleforYT
6 жыл бұрын
Thanks. Very informative! (even for a non-RF guy)
@abdulrhmanalshaabani6200
3 жыл бұрын
Thank you so much. I was struggling to find ESR.
@w0qe
3 жыл бұрын
Glad you found the video useful. Larry, W0QE
@justinle998
5 жыл бұрын
Thank you for this video! Very helpful and well explained!
@w0qe
5 жыл бұрын
Justin, Glad you enjoyed the video. Larry, W0QE
@czorgormez
3 жыл бұрын
great content as always.
@w0qe
3 жыл бұрын
Thank you! Larry, W0QE
@clems6989
6 жыл бұрын
Excellent video, Thank You !...."73"....
@w0qe
6 жыл бұрын
I am glad that this video was informative.
@gregory3617
6 жыл бұрын
Thanks for this explanation.
@jean-michelgonet9483
3 жыл бұрын
«Different manufacturers use different terms for different parts» - Sounds silly, but those are words of wisdom. I think there is some kind of conspiracy between manufacturers to maximize the number of terms used - Thanks for the video.
@w0qe
3 жыл бұрын
Jean-Michel, I doubt there was a conspiracy but was more like the manufacturers of different parts developed their own methods to describe how the parts differed form ideal. Then later they were probably just too stubborn to change. There are a huge number of historical details that it would be nice to know the "real" history. Glad you liked the video. Larry, W0QE
@mohammad-mahditaghipour4307
5 жыл бұрын
Very helpful. Thanks.
@w0qe
5 жыл бұрын
You are welcome! Larry, W0QE
@henriquetannus10
5 жыл бұрын
To get the ESR value from measured D and C, what frequency should I use on the equation? The frequency at which D and C were measured OR the frequency at which the capacitor will operate? For example, my LCR meter works at 10KHz, but the capacitor will be used on a 15KHz SMPS. Should I use 10 or 15 KHz when calculation ESR?
@w0qe
5 жыл бұрын
Henrique, I probably wouldn't worry about the frequency difference. All linear components have an impedance vs frequency that is not dependent on the voltage/current that the component sees and for this discussion the component is assumed to be linear. If we measure the impedance at a particular frequency as R + jX (X will be negative for a capacitor) and we really want the impedance at some frequency that is fairly close to the frequency used for the measurement we can estimate the value. ESR is comprised of 2 main parts: the capacitor itself and the leads to the capacitor (you need to include PCB traces for a circuit analysis). The internal ESR generally decreases with frequency slightly and becomes a minimum at a frequency somewhat below the series resonant frequency. The ESR due to the leads increases as the square root of frequency. In your case I would use the ESR measured at 10kHz and call it good as the difference between 10kHz and 15kHz is not that much provided you are not close to the series resonant frequency. Remember that a 15kHz SMPS varies the duty cycle in some fashion and consequently the capacitor sees frequencies below and some frequencies above 15kHz. Also if you are using a quality capacitor the manufacturer probably has curves for the capacitor which you could use. Larry, W0QE
@uK8cvPAq
6 жыл бұрын
Oh thank god, finally someone who's not speaking Indian.
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