Overclocked
Member
Do Super capacitors have the same characteristics like normal Capacitors? Can they be discharged rapidly like normal capacitors?
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Overclocked said:Do Super capacitors have the same characteristics like normal Capacitors? Can they be discharged rapidly like normal capacitors?
Leftyretro said:However I read recently about a new 'super super capacitor' being developed for electric cars that may eliminate the need for large and expensive batteries, just charge up at home and off you go. Some start-up company in Texas I think, has been attracting venture caps and supposedly have patents and such. Good article but I didn't bookmark it.
speakerguy79 said:That new super cap company, if their claims are true, really has fixed the electric car problem.
There are trains in China that run off super caps and charge at each station when they stop.
Nigel Goodwin said:If they have they wouldn't have any problems finding investors, I just hope it's so.
I suspect it's probably more likely it's full of Chinese men with pedals!![]()
I would be dubious about China leading the world in anything technological.
TrevorP said:Are you serious? China's economy is booming, to even assume for a second that they aren't good with technology is sheer ignorance.
Overclocked said:Do Super capacitors have the same characteristics like normal Capacitors? Can they be discharged rapidly like normal capacitors?
RadioRon said:Super caps are relatively new technology compared to regular caps and so each manufacturers models tend to be very different in many ways from those of other manufacturers. There are several makers who specifically recommend their supercaps for high discharge rates. I believe the AVX lineup ( https://www.electro-tech-online.com/custompdfs/2007/10/bestcap-1.pdf ) of supercaps should work well in this kind of application. There are many others out there, and it is best to study their datasheets to answer your question. The ESR spec is critical, and usually the supplier will specifically address whether their supercap is suitable to high discharge rates or not, usually in the applications notes section of the data sheet.
My experience is that supercaps do indeed work more like capacitors than they do like batteries. In other words, there is no memory effects, you can charge them up about as fast as you can discharge them, and they suffer few internal losses. However, they start behaving differently depending on how fast you are trying to push current in and out of them, in other words do not assume they work like most capacitors as the frequency of current in the application goes up. I have not tried them in any high frequency applications.