Get the SoR Robotics Android App on Android Market for FREE. See this forum post for details.
0 Members and 1 Guest are viewing this topic.
Easy to charge, simply apply any voltage less than the maximum and wait.Almost no limit to current so you can charge/discharge as fast as you're system can handle
You should use them anywhere where you need:Bursts of very high power longer than normal caps can deliver
@Madsci: I know what you're talking about with the discharge rate but I got some from mouser that melted quite a few high gauge wires while I was shorting them for storage. That's for the ones I have at least.
still @madsci: compared to normal caps they are very slow and have very high current limits. my point was that compared to batteries they are very fast and have low limits. (or at least I hope it was, I wrote that a bit late )
Anyways, here's the bottom line: are supercapacitors right for your project? probably not.
edit: again @madsci: supercaps are horrible for railguns. that's what soup can sized capacitors are for.
So, where should you use supercapacitors?You should use them anywhere where you need:Bursts of very high power longer than normal caps can deliver
Lol,. that doesn't mean you aren't tittering on the edge of destruction
I looked, all the super caps i could find data sheets on had ESR values 10s to 100s times worse then standard metal caps, meaning they have lower current limits. What is the ESR for the Cap you have?
I wouldn't say that. When you want your microcontroller to be able to write some data to EEPROM during (after) poweroff, Super caps are perfect for the job. It all depends on what your project is. What super caps have is better capacity at lower voltages; but it comes with costs.
QuoteLol,. that doesn't mean you aren't tittering on the edge of destructionFrom what I can remember a few amps for a few seconds will definitely kill you given the voltage is decent (not 2.5V) so it is very reasonable to say that supercapacitors can deliver this magnitude of current and therefor can be considered to be very harmful if not deadly. they are not the most dangerous thing out there but are also a no-joke safety concern. Agree?
I meant "bursts of energy that are high but not as high as normal capacitors
Bursts of very high power longer than normal caps can deliver
[...] If your caps have high ESR and you are just flat out shorting them, you risk them going explosive.