All Questions
Tagged with electrolytic-capacitor decoupling-capacitor
10
questions
0
votes
1
answer
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Multiple smaller capacitors on power rail for NeoPixel / WS2812B strip
I read in the AdaFruit guide that a 500-1000uF capacitor is recommended on the power rail.
However, electrolytic capacitors in this capacitance are quite large. Depending on the length of the strip, ...
- 101
1
vote
2
answers
92
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Decoupling capacitors for operational amplifiers
when in the refence design of an amplifier (for example OPA856) we see the + sign in a capacitor schematic, does this necessarily means we should use electrolytic capacitors?
If there is no positive ...
- 473
0
votes
2
answers
88
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Need some help with electrolytic capacitors
I am restoring an old 1960s Sanyo reel to reel tape recorder, replacing most bad electrolytic capacitors.
On the preamplifier there are ten Rubycon 6.3V 4.7uF electrolytic capacitors. I assume it is ...
- 3
0
votes
4
answers
620
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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,...
- 858
2
votes
1
answer
264
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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 ...
0
votes
4
answers
1k
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0.1 uF in parallel with larger >1 uF to reduce noise from IC
Back in the day when we would use an electrolytic capacitor across the supply of a IC we would always put a 100nf Ceramic in parallel because (if I remember correctly) electrolytics had inherent ...
- 59
-1
votes
1
answer
361
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How to size a capacitor?
I want to design a PCB with some ICs and I've read that it's recommended to use decoupling capacitors to filter out voltage spikes. There are three ICs on the PCB: Arduino NANO, nRF24l01 module and ...
1
vote
2
answers
1k
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Decoupling capacitor placements and ratings - how to choose?
I am building a circuit with 2 hybrid stepper motors each powered by a stepper motor driver A4988 and both drivers are connected to an Arduino UNO R3.
Before soldering the components together on a ...
- 561
0
votes
4
answers
2k
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Could a larger capacitor, at the output of the SMPS, destroy components with larger current draw when its being charged?
I am designing a SEPIC converter using a LT8364 for "power aplications" and a buck converter using a TPS62125 for powering a MCU.
Since I have a bunch (>100pcs) of 100uF, 16V, electrolitic caps ...
- 535
5
votes
1
answer
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Substition of electrolytic capacitors in surface mount applications
I understand there are advantages and disadvantages against using electrolytic capacitors over others, such as ceramic, but from what I understand the main reason of choosing electrolytic caps is ...
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