All Questions
Tagged with supercapacitor power-supply
28
questions
1
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0
answers
178
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Super capacitor causing overcurrent protection
I'm making a power-supply circuit for some MCUs using a battery charging-discharging protect module MH-CD42 (both input and output is 5 V).
The module's datasheet says it has a 0.3 seconds switch time ...
- 111
5
votes
1
answer
290
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Any thoughts on a supercapacitor battery project?
Just some insight: I am fifteen and have been researching capacitors for a while now.
I have come up with the idea of building a supercapacitor power supply unit solely to power some small electronics ...
0
votes
1
answer
86
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How to spec a power supply for capacitor charging given the simulation and large requirements?
I am using the LT3751 as a capacitor charger for a large capacitor (30mF) and am trying to get an idea of the kind of power supply I would require in order to come close to the simulation charge time. ...
user298907
0
votes
0
answers
524
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Is it safe to add a big capacitor in parallel to a power supply output?
I have an application which uses a 1000W standard PC power supply, drawing continuously around 300W. However, sometimes there are short power surges of ~800W or more, which I believe triggers the ...
1
vote
0
answers
176
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Limiting peak current draw with a supercapacitor or battery
I'm working on a project that runs on 12V DC. The power comes via PoE, which induces a hard limit of 15 watts on the design.
The circuit is intended to drive multiple loads that are rated for ~7W each,...
- 111
0
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0
answers
184
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Battery options for 500mA load
I need to energize a load with 500mA current for 10 seconds. Voltage doesn't needs to be constant but can be in between 0.1v to 1v. The application has size constraints so I can only use a button cell ...
- 1
4
votes
1
answer
794
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Powering microcontroller with a capacitor
I have a ESP32-SOLO-1 microcontroller mounted on a moving part of a machine which moves in a circle. The idea is to power it with a capacitor and then charge the capacitor in a fixed location when the ...
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0
votes
0
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218
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designing a supercapacitor balanced charger circuit
I'm currently designing a super capacitor based emergency power supply for a system. The operating voltage of my system is around 10~12 V. Therefore I'm using 4 2.7V supercapacitors in
series to gain ...
- 155
1
vote
2
answers
908
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Seamless switch to-from batteries with relay involved
I seem to have the same issue 'Ali One' asked about a few years ago
(How to create automatic dual battery changeover/switching circuit for uninterruptible power?), except I have a twist that a relay ...
- 11
1
vote
3
answers
1k
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Can I increase my power output from my solar panel using a capacitor?
I have a 3V, 70mA solar panel rated at max 210mW. If I design a RC series circuit with it, can I increase the power outlook to about 2W? If so, how can I determine the time it takes to charge? How ...
- 81
1
vote
0
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112
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space constrained, cost constrained; super capacitor UPS decision paralysis
I am currently in the process of evaluation of options regarding Super capacitor UPS designs.
The requirements are simple, find the most effective solution to keep alive 5V supply line for ~20 ...
- 171
-2
votes
3
answers
454
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Limiting discharge current of super capacitor
I'm looking to use super capacitors to heat up a short length of NiChrome wire. My caps are capable of supplying far more current than needed to get the wire up to temperature (about 6 amps). What I ...
- 61
8
votes
6
answers
475
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"Temporary boost" supercap
I have a 12VDC load (up to 10A) that functions correctly down to 8VDC. Sometimes (frequency: many seconds max, many minutes typical) the power source has a very brief (few milliseconds) drop to 7V. ...
- 125
1
vote
0
answers
280
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Low Power Supercapacitor LTE modem supply
I am interested in your comments about the following LTE modem power supply from a single 3.6V ER34165 battery with minimal Iq (quiescent current).
The battery can only handle 200mA continuous ...
- 23
0
votes
3
answers
2k
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Cheap and simple way so switch on and off based on voltage, with hysteresis
I'm playing a lot with solar powered systems using ultracaps for energy storage. I'm also powering some small ~3.3V systems directly from LiFePO4 cells, charged by solar power.
In both cases I'd like ...
