Questions tagged [electrolytic-capacitor]
An energy-dense polarized capacitor type, used in low-frequency filtering applications.
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What is the result of wiring an electrolytic cap in series with a ceramic when parallel was intended?
FINAL UPDATE A reassessment of my power consumption has led me to the solution to all of my problems. I picked up a 5V, 5A power supply (giving me plenty of overhead), reassembled my project, and it ...
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Aluminum electrolytic vs. aluminum polymer capacitor
What type of capacitor should I use for a longer life (C8) aluminum electrolytic or aluminum polymer capacitor? It works at 400 kHz and must provide a current of 30 mA.
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How to Calculate Ripple Current?
How do I calculate the ripple current a capacitor will experience for a given circuit?
For example, let's say I have a smoothing capacitor on the output of a full-wave bridge rectifier (120VAC, 60Hz) ...
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Which manufacturer's logo is this?
I'm trying to identify the manufacturer (and hopefully part number) for these capacitors.
My guess is they're standard aluminium electrolytics, rather than something fancy like alupoly, but I can't ...
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What is this capacitor?
Can anyone confirm what the markings on this capacitor mean?
I think it's a 560 μF capacitor, but I am used to seeing that on the first row of similar devices.
For voltage, I believe it's a 35 V ...
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What is the purpose of these different-value capacitors? [duplicate]
I guess I am trying to figure out why we wouldn't just consolidate these into one single 22.11uF capacitor.
My initial understanding was that each capacitor was better at filtering certain frequencies,...
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Polarity of electrolytic capacitor
Electrolytic capacitors can only be biased by one polarity of the voltage.
I am having a hard time understand how to connect a electrolytic capacitor to a voltage source.
The symbol of a electrolytic ...
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How to calculate the voltage out of capacitor?
In the above image a small part of a large circuit I'm trying to understand.
V1 : 220v @50
D1 : Any diode like 4007
R1 : 270k
R2 : 16k
C1 : 10u to 100u
M1 : Voltmeter
Vout = (Vs*R2) / (R1+R2)
...
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Electronic components pressure rating [closed]
I have made a custom PCB that measures acceleration. The PCB contains components such as op-amps, SMD resistors, COG capacitors, and tantalum capacitors. The circuit is powered by a saft ls14500 AA ...
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Why conductor having charge(let say 1C) have tremendous potential but same conductor used in capacitor have low voltage?
When we talk about electrolytic capacitors or the supercapacitors (EDLC), then we know that we can store large amount of charges in it.
Since in electrolytic capacitors the aluminum plate acts as ...
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How to rectify and smooth a high frequency sinewave
I'm working on an experiment that generates a high frequency sinewave using an air core transformer.
How can I rectify and smoothen this high frequency sinewave because most of the high current ...
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Why is there electrolyte soaked paper in an electrolytic capacitor?
I know that the soaked paper spacer is there to protect oxide layer but how does it protect it and from whom does it protect it?
Why does the paper spacer need to be soaked in electrolyte and what ...
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Shorted capacitor
The aim of the circuit below is to continuously switch power from one LED to another (D1 & D2).
The issue comes arises when I close the push switch (SW2) and an error message pops up saying that ...
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How robust and stable is this circuit?
I have a small delay circuit to automatically open my building door by pressing the intercom button for a few seconds.
Whenever the intercom button is pressed the switch closes and the cap starts ...
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Are my capacitors working properly or not?
I've bought some capacitors because I needed to generate a current pulse into a coil. The idea was to charge a capacitor separately and then connect it to the coil to have a strong and brief magnetic ...
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I have a height problem (with my switching regulator on a height constrained PCB)
I was planning to use this part (datasheet) (basically MC34063 with thermal shutdown,) but I don´t have enough room above the PCB.
I need to keep the components under 2.2mm.
According to my ...
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How to combine elecrolytic capacitors into one big bipolar one
I want to make capacitor with large capacity which can hold both positive and negative charges. Is it possible to combine elecrolytic capacitors somehow to achieve this?
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Where to place a cooling fan supply capacitor
I want to run a ~2W, 12 VDC fan in an EMI-sensitive environment.
The schematic is shown below. Due to the spiky current draw, I intend to place C1 and C2 right by the fan connector, so high frequency ...
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Circuit won't blink, and probably can't. Or can it?
I have tried to understand the simple circuits in the questions Intuitive and iterative approach to understanding of blinking LED circuit and Changing the frequency of a flashing LED. I've built them ...
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What is the Dissipation Factor of a capacitor useful for in its direct form?
Why do electrolytic capacitor makers provide the low frequency ESR in the form of a dissipation factor (DF) instead of an Ohms value as they do for higher frequency. The DF is rather unwieldy and I ...
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What are the consequences of using a capacitor that is of higher capacitance?
I'm troubleshooting a circuit board that has a dead short somewhere. I removed some capacitors which were shorted in circuit but the problem was elsewhere on the board.
When testing these 1500uf 2.5V ...
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Electric capacitors instead of earthing electrode
I'm going to make a partial EM-shield (using aluminum) for my 3G USB (2.0) modem, and I need to "ground" electricity from the surface of that shield.
Daily worktime for that 3G modem is ...
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Excluding visual inspection, are there general strategies for guessing at potentially damaged electrolytic capacitors in a given device?
In many cases of checking for bad electrolytic capacitors on a non-working electronic device, the number of capacitors makes it infeasible (for me anyway) to simply change out all of them one by one ...
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From where can I get the impedance graph/ frequency response information of a capacitor?
I want to know the self resonant frequency (SRF) of a tantalum or aluminum capacitor. Is this usually supposed to be there in the datasheet?
I am wondering why it is not mentioned in datasheet since ...
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Can we use electrolytic capacitors on IC power rails?
Can we use bulk electrolytic capacitors on the power rails of an IC? I know that we will use bulk capacitors in switching regulators at input. Can anyone explain why or why not and how to find ripple ...
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Putting AC across polarised capacitors in headphone amp?
This circuit is from Fig. 20.3 in Douglas Self, Small Signal Audio Design, Third Edition, Routlege, 2020.
This is a headphone amplifier, and as such, both input and output signals are alternating ...
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Replacing Darlington with MOSFET for capacitive discharge circuit into a solenoid?
I have the following circuit and criteria and am wondering if it makes sense to replace the Darlington transistor with a MOSFET, and if so how would that change the circuit? This circuit turns on T1 ...
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Problem simulating electrolytic capacitor at high frequency (GHz+ range)
simulate this circuit – Schematic created using CircuitLab
I am simulating a circuit in LTspice in which I use an aluminum electrolytic:
C=100µF, Rser=0.25, Lser=5n
Due to some other components, ...
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What's the use case for a 0.1µF electrolytic cap? [closed]
I've noticed 100nF electrolytic capacitors are made and sold, which means people are probably buying them, but... ESR is huge, ripple current is tiny, accuracy is low, and they're larger and more ...
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How do I fix a circuit that keeps blowing a capacitor?
I have an aftermarket AC>DC wall wart that was made in China and there is an electrolytic capacitor in the circuit that blows about every 2 years and it just happened again. I'm tired of replacing ...
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