Electrolytic capacitor ESR at DC (Zero Hertz)
Electrolytic capacitor ESR at DC (Zero Hertz)
(OP)
Hello , this capacitor's ESR is 0.141R at 120Hz.
(Rubycon TLV series , 1.5mF, 16V)
-but do you know what is its ESR at DC (Zero Hz) ?
Datasheet as a file download:-
http://www .2shared.c om/documen t/YEIECZh3 /T...ic_ca pacit.html
Datasheet on web:-
http://www .rubycon.c o.jp/en/ca talog/e_pd fs...roduc ts_Eng.pdf
(Rubycon TLV series , 1.5mF, 16V)
-but do you know what is its ESR at DC (Zero Hz) ?
Datasheet as a file download:-
http://www
Datasheet on web:-
http://www





RE: Electrolytic capacitor ESR at DC (Zero Hertz)
In other words, there is no such thing as DC ESR. And if it existed, you could not use it for any practical purposes.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
That's not an ESR issue, but dielectric absorption or "soakage" as National calls it.
Benta.
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
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RE: Electrolytic capacitor ESR at DC (Zero Hertz)
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
Thought: Put DC on the capacitor and superimpose a square wave. FFT voltage and current. Calculate ESR at different frequencies from ratio Un/In, where Un and In means voltage and current value at the harmonics found.
That would also show if ESR varies with frequency or not. Has to be careful, though, so ESL doesnt show. That would ruin the measurements.
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
...so its essntially DC.
But i fear that the Zero Hz ESR may be well high and poorly toleranced from part to part (or batch to batch?)
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
RE: Electrolytic capacitor ESR at DC (Zero Hertz)
Also, it will have a very small effect on your circuit's performance. I think it would be a lot more productive to concentrate on real issues.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...