All Questions
Tagged with electrolytic-capacitor capacitor
189
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Energy stored in a capacitor with dielectric
This is a problem from a book. The exact words of the problem are below:
A condenser of 1 µF contains titanium oxide (\$TiO_2\$) as a dielecric with \$ε_r\$ = 100. For an applied D-C voltage of 1000 ...
- 407k
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1
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94
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Why are there capacitors in series in this AC/DC converter?
In a circuit with an AC/DC converter that supplies 12V and then only 11.4V because of a diode (D16), I have found capacitors in series (C33 and C38, each 100µF 35V.) That makes no sense to me since ...
- 456
9
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3
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Can an electrolytic capacitor withstand 0.1 V reverse polarity?
Let’s start the question with a brief description of my application.
I am trying to attach a headphone jack with a detect pin to a RDA5807 IC based FM radio project. I am using a separate ...
- 858
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1
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68
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Cyclic Voltammetry for a Capacitor - Positive Current, Potential is decreasing?
In the boxed red region, why is the potential decreasing when the current is still positive? To my understanding, when the current is still positive (i.e. not changing direction), the capacitor will ...
- 14.5k
1
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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 ...
- 635
1
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1
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194
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How does temperature affect ripple current parameter in electrolytic capacitors?
A maximum ripple current declared, for example, at 100 kHz and at a temperature of +105 ℃ for an electrolytic capacitor, if estimated at a temperature of +85 °C, how much does it increase? What order ...
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-3
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3
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126
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Blowing up capacitors with a 9v battery [closed]
Hello, I have a 9V battery I would like to blow up some capacitors with; currently I have 6.3v 180uF capacitors that don't seem to blow up at least in a good time(I'm aiming for <5 seconds), they ...
- 55k
18
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3
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How to Measure Very Large Capacitance e.g. Super/Ultra Capacitors
I have recently acquired a couple of mysterious ultra/super capacitors from my brother. Apparently he doesn't remember any of the specifications or even brand... To further complicate matters, they ...
- 1,379
1
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1
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369
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THAT4315 audio analyzer - capacitors getting hot
I have designed a audio spectrum analyzer circuit with THAT4315 and a drivers for IN-13 bar graph nixie tube to visualize the signal level.
To supply +-12V to the opamps, the Meanwell NSD15 module is ...
CommunityBot
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1
vote
1
answer
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Electrolytic 3-lead capacitor
I have a 3-lead capacitor that I'm having a hard time identifying. It is from an old Lafayette PF-30 receiver. I don't have schematics or a manual.
It has a high squeal when turned on, and my first ...
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147
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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
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1
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144
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Can you replace ceramic or tantalum capacitors with aluminum electrolytic capacitors?
I have a question about the hookup for my 12VDC to 5VDC step down module - the K7805JT-500R3.
It states in the datasheet that ceramic capacitors are what can be used but it also states that tantalum ...
- 72.5k
5
votes
1
answer
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Electrolytics and PCB Routing
In researching whether or not it's common practice to run traces/place vias underneath electrolytic capacitors (specifically SMD electrolytics, didn't seem like it would be an issue to me), I came ...
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Calculate capacitor charging constant time connected to battery and boost converter
I know the formula to calculate the constant time for capacitor is t=RC and for full charge t=5RC.
In the following example there is not resistor in the circuit but of course we are not in the ideal ...
- 465k
1
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4
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Can I substitute a capacitor with the same rated capacity and voltage but a lower inductance and higher rated ripple current for a mobo repair?
I have an early to mid 2000's motherboard that I am trying to restore. It looks to be mostly in good condition but a blown radial electrolytic capacitor might be causing trouble. From the placement of ...
CommunityBot
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