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Q&A

Posts tagged capacitor

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77%
+5 −0
Q&A Unexpected impedance spike when paralleling capacitors

I was watching a video from EEVBLOG about bypass capacitors, and he presented a theory that randomly connecting different values of capacitors in parallel can create unexpected impedance spikes: ...

3 answers  ·  posted 6mo ago by Elleanor Lopez‭  ·  last activity 6mo ago by Andy aka‭

50%
+0 −0
Q&A Capacitors of voltage regulators [closed]

Assuming we have a voltage regulator : Why do we have to ground Vin and Vout using 2 capacitors just like that?Co could be to provide a low resistance path to GND at high frequencies but what is...

0 answers  ·  posted 1y ago by MissMulan‭  ·  closed 1y ago by Olin Lathrop‭

44%
+2 −3
Q&A Parallel RLC circuit

How to find the equation of voltage of the top common node of R1,L1 and C1 after the switch is moved?

1 answer  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by MissMulan‭

42%
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Q&A Series RLC circuit

How to find the equation of current of the RLC circuit after the switch is moved?

1 answer  ·  posted 1y ago by MissMulan‭  ·  edited 1y ago by MissMulan‭

60%
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Q&A Voltage and Current of capacitor

How do I find the voltage of the capacitor and the current through the capacitor after the switch is closed?

1 answer  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by MissMulan‭

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Q&A Critically damped oscillation issue

I have a question about this circuit:(critically damped oscillation) For a critically damped oscillation for a series RLC circuit the equation of current has this form I(t)=D1te^(-at)+D2e^(-at) ...

2 answers  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by a concerned citizen‭

71%
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Q&A Capacitor in 2nd stage of opamp

Inside a op-amp after the stage where the differential signal is converted to single ended , there is further amplification of the DC signal.For AC signals there is a capacitor parallel to the tran...

1 answer  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by Olin Lathrop‭

77%
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Q&A Capacitor ESR vs. Impedance

One of the ceramic capacitors that I've found(link to the capacitor) specifies the following characteristics at 10 kHz: The difference in value is quite significant, almost 100 fold. Which grap...

3 answers  ·  posted 1y ago by 2kind‭  ·  last activity 1y ago by TonyStewart‭

Question capacitor esr esl
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Q&A What is the purpose of paralleling capacitors on the input/output of a power converter?

In the design of a power converter, picking the appropriate capacitors for the input and output of the converter is quite important. It is relatively easy to calculate the necessary values for a gi...

1 answer  ·  posted 1y ago by Mu3‭  ·  last activity 1y ago by Olin Lathrop‭

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Q&A Current Flow in the OFF Time of a Switching Power Supply

I am having a difficult time picturing the flow of current and the role of the capacitor during the OFF time of a buck converter. Here is my understanding so far. During the ON time the magnetic fi...

1 answer  ·  posted 2y ago by jm567‭  ·  edited 2y ago by Olin Lathrop‭

Question capacitor smps buck
71%
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Q&A Electrolytic capacitor lifetime rating

If you search through the electrolytic capacitor offerings from distributors like Farnell, RS, Digikey or Mouser, you find that the maximum life-time rating is commonly quoted as 5,000 or 10,000 ho...

1 answer  ·  posted 2y ago by Andy aka‭  ·  edited 2y ago by Andy aka‭