Different ESRs perhaps but the combined charge is the 4VDC you provided, which is why it is generally best to charge series supers separately (or with active balancing circuits) since when one has reached its rated voltage level, it will no longer conduct.so after putting 2 in series and charging to 4v , one is reading 2.8v and the other at 1.2v, i know that this is prolly not good.
hmm. could a doubler circuit help here, where i charge caps in parallel @ 2.4v and discharge in series!?
I agree.I'm totally bemused why...
So i hear about these super caps and decide to get some, my first attempt of use is to replace my 4.5v AA battery pile, i realize now that i need to be careful with volt limits of 2.5v per cap,
so after putting 2 in series and charging to 4v , one is reading 2.8v and the other at 1.2v, i know that this is prolly not good.
so then i decided to put a 2.4v zener diode in parallel to each capacitor,
maybe its just me but now i m worried, originally when i would hook with pickit supply @ 4v the supply would notify me of current error, so i put a resistor between caps and supply. BUT now with the zeners, caps are connected direct to supply but not creating current error.
so now I am here wondering how to do this properly, and would diodes work for regulators? maybe i should just go back to my rechargeable AA x 3 batteries?
maybe i should use resistors? but need help determining values.
...
It is funny that I started this circuit with 2.5v solar feeding a 1.5v battery then used boost converter to step it up, but had problem with boost converters starting up at such low volts ...
I realize I do seem to run in to problem with power supplies and choosing which work best for my apps , I wish there was a chapter or 2 i could read.
I thought that was Alice in Wonderland? So you did not like the Wind generator on a cap idea?I was just hoping for a indiana jones situation where i would just fit under the door.
thanks all the help is great , i will stick with the aa s
I was just hoping for a indiana jones situation where i would just fit under the door.
the 5v panel i bought were ebay too, 500mW, not too sure about the 2.5v smaller ones, they were (salvaged).
here is link for boost converter:
https://www.electro-tech-online.com/threads/1v-boost-converter.142170/
I also tried one with discrete components, which was poorly designed and a bust as well
I did!I thought that was Alice in Wonderland? So you did not like the Wind generator on a cap idea?People just don't get my humor...
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