All Questions
Tagged with supercapacitor power-electronics
13
questions
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Charging a super cap with a Li-po battery while maintaining charge
I have a 3 V 100 F capacitor and 400 mAh 35 C battery, the battery is to be charging the super capacitor and maintaining charge until a button is pressed to discharge the super cap. I am stuck with ...
- 407
2
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1
answer
292
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Designing boost converter for a supercapacitor source and LED load
I have a 2.7 V 100 F supercap, that would equal 364.50 J of energy based on E = 1/2CV^2. If my load is a series of 4 LEDs with a stack forward voltage of 12 V and forward current of 3 A that would ...
- 407
1
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1
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Help with supercapacitor charging circuit
I need to design a circuit to charge a capacitor from 0 to 2V. The circuit should not be that complicated and no matter the type of capacitor, it should never exceed 2.7 V when charging. The capacitor ...
1
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2
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Inverse temporal power-law increase of DC voltage under the application of constant DC current
Is there any material in which the DC voltage follows an inverse temporal power-law increase, under the action of a constant DC current? This implies a situation in which a constant current, I, is the ...
- 21
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3
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2k
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Is this device claiming to reduce electricity bill a scam? [closed]
I saw something on the net and I have no doubt that it is a scam. This advertises as 90% reduction of electricity bill in a houshold.
I have no idea what it does. From the looks of it it is just a ...
- 787
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1
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Finding practical solutions for discharging and charging a capacitor
I am wondering can I charge and discharge a supercapacitor at the same time like a battery.
I have 1.3V going into a 10F 2.7V capacitor in series with a 0.5 ohm resistor. I calculated it will take ...
- 81
1
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3
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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 ...
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So why aren't supercapacitors used more often? [closed]
I've recently found out that supercapacitors (C >= 1F or so) are actually a thing.
I went searching for their advantages and disadvantages.
They don't hold as much energy as a battery, but can ...
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1
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1k
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How much capacitance/joule/watt is needed on average household' energy storage system with supercapacitor?
I am on the process of making assumption how much capacitance/joule/watt is required on average supercapacitor as household' energy storage system. I plan the design for energy hub to be charged by ...
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2
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How to power two LEDs with a 1 Farad charged Super Capacitor as efficiently as possible?
I have came across a awesome super capacitor Flash LED Driver chip for cameras.
On page 10 of the LED driver datasheet, it says:
How long the LED current is regulated depends on the initial CAP
...
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2
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171
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Where can I find 1.5kWh energy, at about 5-15Wh/kg batteries that can deliver about 350kW power? (as indicated on this wikipedia article?) [closed]
I am a rookie in this field, so any kind of feedback/edit is welcome! :)
I am currently trying to find supercapacitors/batteries that have following properties:
Have about 1.5kWh energy, at about 5-...
- 123
-1
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2
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516
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Can we use super-capacitor/s as a Vin input of the voltage regulator instead of DC power supply? [closed]
I do not want to use a battery in my circuit. My circuit would contain some charged super-capacitors and voltage regulators.
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5
votes
4
answers
722
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Supercapacitor with a rated voltage value greater than 2.7V feasible?
I've been researching into the development of electrical power units for Automotives (motorsports in particular, as I participate in my Uni's Formula Student team) and have started by looking into the ...
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