All Questions
Tagged with electrolytic-capacitor capacitor
189
questions
0
votes
2
answers
415
views
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 ...
- 491
2
votes
0
answers
79
views
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 ...
- 75
1
vote
1
answer
129
views
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 ...
- 81
0
votes
1
answer
214
views
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 ...
- 1
0
votes
3
answers
153
views
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 ...
- 3
0
votes
1
answer
129
views
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?
- 535
2
votes
2
answers
1k
views
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 ...
- 2,885
-1
votes
2
answers
173
views
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 ...
- 19
2
votes
1
answer
195
views
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 ...
- 3,032
0
votes
1
answer
159
views
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 ...
- 543
10
votes
1
answer
190
views
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 ...
- 79.5k
1
vote
2
answers
964
views
What capacitor value should I use for 3.3v from a buck converter IC?
I am relatively new to electronics and trying to design a buck converter circuit using the XL1509-ADJE1. The datasheet specifies that for the adjustable versions (which this is) you should use ...
- 15
1
vote
0
answers
197
views
Discolored negative lead on electrolytic capacitors
Would the discoloration around the negative lead of these capacitors be a sign of failure? If so, why would the negative lead darken instead of the positive - or both leads.
They are Maron EFM 35 ...
- 71
0
votes
1
answer
147
views
Precise capacitor in parallel to power supply
I found this schematic in ADNS-2610 datasheet.
There are two capacitors in parallel between pins 6 and 7 (GND and VDD.) One is 4.7 uF and the another is 0.1 uF, so the parallel result is 4.8 uF.
Why ...
- 135
0
votes
0
answers
127
views
Capacitor Lifetime
Can anyone some sample calculation on how to calculate the lifetime on an Aluminum Electrolytic capacitor who's Endurance value (Assumed as Lifetime value is 2000 hours at 105degC).
The manufacturer ...
user220456