Thanks for the replies.since theyre capacitors, they shouldnt need a charging circuit. mcmelectronics has some 30a 12v power supplies that you can lower the voltage on.
this would work http://www.mcmelectronics.com/product/72-7685
or a cheaper way would be to get a 7.4v r/c car battery pack and wire it directly to the capacitors. they normally are about 8v charged. i think it would work with some of the better packs, be careful though.
They're your capacitors, you tell us.supercapacitor battery needs to have a load control?
Is need create some protection to disconnect the capacitor battery when fully charged? note: I use a current supply to charge the battery.They're your capacitors, you tell us.
Do you think you need to limit the charging/discharging current? Otherwise I don't know what you mean by "load control".
I have a battery of supercapacitors and I will charge with a current source 100 A.Might be helpful if you tell us what you're trying to build.
I agree. The only criterion you need to know when to stop charging is the voltage on the capacitor. You don't want to exceed the rating. If it was me, I wouldn't design it to exceed, say, 80% of the rated voltage.So if your supply is 7,5 V then the cap will charge up and stop at 7,5 by itself .
Since it's a capacitor then you just have to charge it with a voltage lower than the rated which is 8.1 V.
So if your supply is 7,5 V then the cap will charge up and stop at 7,5 by itself .
I'm just waiting for someone more experienced to drop in and say how many volts an 8.1V rated supercap can be charged up to without damaging its lifetime and ESR .
Why? What are you protecting? Are you saying your charger will not stop at 8.1V on its own? Use a voltage cutoff. But you need to switch a large current, so that will not be simple.But I need a protection to disconnect the battery when fully charged.
I found an article that has what I want to doWhy? What are you protecting? Are you saying your charger will not stop at 8.1V on its own? Use a voltage cutoff. But you need to switch a large current, so that will not be simple.
I found an article that has what I want to doThey're your capacitors, you tell us.
Do you think you need to limit the charging/discharging current? Otherwise I don't know what you mean by "load control".
I found an article that has what I want to doMight be helpful if you tell us what you're trying to build.
The authors might be happy to respond to you....does anyone know...
by Duane Benson
by Aaron Carman
by Aaron Carman