Questions tagged [supercapacitor]
Very high energy-density capacitors, typically measured in farads.
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Charging supercapacitors with Buck converter. Do I need to cut power once charge is reached?
I am trying to build a supercapacitor charger, and as I don't particularly have a good handle on the risks of such a thing, I'm hopping on here to give some information.
I am using a buck converter ...
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How can I modify the charging circuit of the solar powered system using super-capacitor with or without battery (diagram is attached)?
I 'm working on a device which according to the below diagram, has a solar panel witch gives at most 10v voltage and 30mA current (average 9v and 20mA) and also it has a 6v lead acid dry battery with ...
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Why capacitor voltage getting low even in open circuit?
I got two 2.7V 100F supercapacitors. I have wired them in series and applied 5V.
One capacitor I have tried have been about 2V. I put it on my desk without any connection.
A couple of hours later, ...
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Are Supercapacitors Polarized
There seems to be conflicting information on the internet.
Are super capacitors polarized? For instance, could you charge them and then suddenly invert their polarity (à la charge pump)?
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Solar cell powered supercapacitor charger with strange output voltage regulator problem
I have a strange problem in a low power circuit design. I designed a buck-boost converter as a maximum power point tracking circuit (control the output of solar cell within a small voltage range ...
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Is there a schematic symbol for a supercapacitor?
Is there a schematic symbol for a supercapacitor, as distinct from smaller polarized capacitors?
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How long would a 150 farad capacitor light up an LED?
I have a bright white LED from a flashlight. Approximately how long will it light up with a 150 farad 2.5 volt capacitor? Do I need a resistor? If so, how many Ω? The capacitor is a Maxwell 150 ...
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What is the principle of active voltage balancing/equalizing device?
I am wondering about active voltage sharing devices. Their purpose is to equally divide voltages on slightly unequal super-capacitors. I found some papers like this, but it is too scientific.
I want ...
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Constant power discharge of a non-ideal capacitor
My employer sells boost converters to hold up motor drives during power loss. These boost converters are fed from capacitor banks. In order to size these banks correctly, we need to take their voltage,...
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supercap-powered RTC?
I'm designing a ATmega-based microcontroller test board. One of the features I want to include is a Real Time Clock with a Maxim DS1307 IC. Instead of including a traditional coin cell battery backup, ...
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How practical would a car booster using supercapacitors be?
Currently car boosters (a portable unit charged of an outlet and then connected to the car electrical system to start a car when the car battery is dead) typically use batteries - lead-acid, Li-Ion or ...
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How durable is a supercapacitor?
Suppose I have a device that utilizes a supercapacitor.
How long will it take to wear out the supercapacitor so that it needs replacement?
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How to work with supercapacitors?
I'm thinking of using a supercapacitor to power a device with low power consumption. I have one 1 F capacitor rated at 5.5 V and I plan to charge it using input voltage of 5 V.
What precautions ...
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Supercap compared to a battery
What is the current state of things when it comes to super capacitors and batteries? Are super caps anywhere near rivalling LiPo's in capacity?
I've often heard people talking about super caps as ...
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