Questions tagged [supercapacitor]
Very high energy-density capacitors, typically measured in farads.
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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 ...
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Super-capacitors to heat resistive wire
I am looking for help/insight into the feasibility of using the stored energy in supercaps to heat a short length of nichrome wire, or a vape coil.
I have nichrome wire that is 0.040 size, at 0.408 ...
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Feasibility of obtaining a 210µF 4.5kV DC capacitor?
I'm looking for a high-capacitance, high-voltage capacitor for a experiment I'm interested in trying out (i.e. order of 100µF rated for at least 4.5kV DC). I realise these specifications may be ...
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Component protection and charge optimisation for Solar + Supercapacitors
What are the best protective practices for solar cells and supercapacitors when they are used for small outdoor projects? Moreover, are there any way of widening the useable voltage output range of a ...
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How to interpret the “surface power density” of a battery/capacitor
I’ve come across this research and one point of representing a power output confuses me:
This enzymatic fuel cell is based on non-immobilized enzymes that exhibit a maximum power output of 0.8 mW cm−...
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Voltage (or power)-current relation of a small supercapacitor
Is size a factor that limits the maximal current that a capacitor can take?
I got this question when seeing Figure 7 of this supplementary material of the research of the smallest super-capacitor now. ...
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Making a DC to AC converter at home
My idea was to build a DC to AC converter, and I want to make sure it's feasible:
simulate this circuit – Schematic created using CircuitLab
A supercapacitor has very low voltage operating ...
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Calculating capacitor leakage current
I'm trying to calculate the approximate leakage current for some capacitors I have. They are 5F 2.7v supercapacitors. I charged them up to 2.69v using a precision bench supply through a 68 ohm ...
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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,...
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Short-circuit current through disconnected capacitor
I have a large capacitor made of two smaller 200V rated 560uF capacitors. If I charge this capacitor to 30V with 4.5A from a bench power supply and disconnect it after around 7 seconds, how do I ...
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How do I find this type of starter capacitor? (photo)
I've searched for the numbers, 2001-42 and TW9569 and not finding anything. How would you go about searching for this type of replacement capacitor?
It came from an American Standard Jacquzzi/...
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Building a hybrid ultra-capacitor and battery bank
I have a project that I need input on.
Is it possible to build a hybrid bank out of ultra-capacitors (UC) and batteries?
The generalized flow of the system I'm thinking is from solar (48V) to UCs (48V,...
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Can a super capacitor in parallel make a power bank usable as UPS?
I want to use a power bank as UPS for my Raspberry Pi but it doesn't has pass-through power, so whenever mains power gets connected or disconnected, the power bank cuts off power supply to the Pi for ...
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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 ...
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super capacitor's maximum charge current
I am designing a backup system based on a supercap and an LTC4041.
The calculations by the guidlines in the datasheet brought me to the folowing parameters:
Capacity:2.4F
Charge current: 1A
charge ...
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