All Questions
Tagged with supercapacitor capacitor-charging
14
questions
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answer
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Wide input voltage capacitor charging control
I'm working on a project in which we are using a bank of inexpensive 100 μF caps (up to 20 of them) to keep a microcontroller powered up long enough to do housekeeping for shutdown when the main power ...
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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
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4
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Charging supercapacitors with reversed polarity
I bought six supercapacitors and connected them in series to get a total voltage of 16.2 VDC.
The product's Mouser No is: 723-BCAP0450P270S18, Mfr. No is: BCAP0450 P270 S18, the datasheet can be found ...
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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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4
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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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60A current drain on supercapacitors in series?
We have a project to build an RC car from scratch and are only allowed to use NiMH batteries, no LiPo. We're hoping to power the car with an EDF (https://hobbyking.com/en_us/durafly-vampire-v2-rcaf-...
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answer
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Low power device with high current peak
I'm creating power supply for controller that usually operates with very low power consumption, but sometimes needs high power. To make the situation harder there is "sometimes" external power present ...
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Ultracapacitor doesn't charge
I am concerned about an ultracapacitor (2.7v, 3000F) that I received today. I set my power supply to 2.5v with a current limit of 1A, then connected a diode to the positive lead such that current ...
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18
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3
answers
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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 ...
- 205
1
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2
answers
5k
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Supercapacitors in series
Can I charge series of 4 Maxwell BCAP3000 supercapacitors with constant current method using an adjustable Power Supply, and exceed the voltage rated for single cell?
What I mean is to charge the ...
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4
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Super capacitors high current charging and discharging
simulate this circuit – Schematic created using CircuitLab
simulate this circuit
I've been playing around with the idea of using super capacitors as the main way to start my car (basically the ...
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Charging supercapacitor parallel with different sources
Is it possible to charge one supercapacitor with multi voltage sources in same time? All rated at near by 4V for example, 4.05, 4.1, 4.0 volts.
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Supercap maximum current rating
I'm designing the power circuit for the \$V_{BAT}\$ portion of an STM32 microcontroller, using a supercap to hold the charge when the main is off.
I was calculating which resistor I should charge the ...
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1
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0
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276
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Supercapacitor discharging
I had bought a Maxwell ultracapacitor (this one) rated for 1200F at 2.7V. Its ESR according to the datasheet should in ballpark of 0.4 milliohms.
It got delivered today and is undamaged and new by ...
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