Questions tagged [supercapacitor]
Very high energy-density capacitors, typically measured in farads.
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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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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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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 ...
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Why is my super-capacitor self-discharging so fast?
I'm experimenting with a night light powered by a mini solar panel charging a super-capacitor instead of battery. (I know, I know. It's not recommended for this usage but I want to try it anyway). It ...
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Supercapacitors as car batteries [closed]
I've seen YouTube videos of supercapacitors replacing car batteries. Is this practical? And if so, why haven't they been offered in the automotive market place?
https://www.youtube.com/watch?v=...
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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 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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Controlling high current (1000A) with MOSFETs
I am currently designing a capacitive discharge spot welder and am running into the issue of switching.
I plan to use a few super capacitors in series to discharge around 1000A in a very short ...
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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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MOSFET broke after attaching capacitor bank
I have a solenoid that has a coil resistance of \$0.3\Omega\$ and accelerates a steel projectile here. I've posted the schematics below.
Normal Version that acts as a control
The GPIO8 goes to 5V to ...
user229515
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Using supercapacitor as backup for MCU
I have this project that requires some kind of backup power supply. and I am planning to use a 5V 4F super cap.
there are my questions:
I am planning to charge the cap with a diode and 100 ohm ...
user83582
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Using capacitors as a battery back-up
I have a device which is operated from a 12 VDC 10 A power supply and draws 8 A in operation.
I need to run this device for at least 20 seconds when the 12 V power supply is lost upon a power failure. ...
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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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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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Powering an Arduino with a Supercapacitor
For the purpose of a project I wish to power an arduino using a supercapacitor charged to 5V. The supercapacitor will be fed straight into the power Vin and GND terminals on the Arduino. No power plug ...
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