Questions tagged [electrolytic-capacitor]
An energy-dense polarized capacitor type, used in low-frequency filtering applications.
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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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