$2 for 10 PCBs & 24 Hour Production: https://jlcpcb.com
24V Supercapacitor (9x 2.7V capacitors in series) charged using boost and buck converter bench power supplies. Protection circuits thermally imaged and lots of talk about backfeed through the PSUs.
24V Supercapacitor Module on Banggood: https://ban.ggood.vip/8ssx
24V Supercapacitor (9x 2.7V capacitors in series) charged using boost and buck converter bench power supplies. Protection circuits thermally imaged and lots of talk about backfeed through the PSUs.
24V Supercapacitor Module on Banggood: https://ban.ggood.vip/8ssx
Tolerance on most components is tested after manufacture. So if these are +80-20% then it's perhaps bit surprising that one is a higher capacitance and therefore slower to charge, for example.
Also, some supercapacitor chemistries perform better when warm. I have no idea about the ones you have though I'm afraid
That block is physically huge compared to the 18V, 100 Farad one which you'll be receiving from Robert Murray Smith! We're waiting to see what you do with that one, and how its self-discharge compares with this 24 V one.
maybe you can order a replacement cap for the naughty one and solder it on ?
You could move the lazy cap to another position, and see if it is part of the charging circuit or the capacitor itself.
Julian, Buck-Boost means it buck regulates first, doesn't it?
Edit: Doh, you were talking about a separate rig. This is what I get for watching youtube after staying up late.
if you put the same amount of charge into each capacitor, and one of them has a lower voltage, that actually means it has a higher capacitance, not a lower capacitance. Unless it is leaking charge internally. your problem might also be a defect in the regulating circuit for that capacitor
Ain't that bout rite with the protection circuits linked in series wasting energy ffs chineseium products
what would happen if you started using your pointer finger?
So banggood is also loading off the faulty-disregarded units for cheaps for unsuspecting buyers huh. Specially if you mentioned, that the previous one also had a lazy one.. that kind of shows a trend, that they are modules that work but have a faulty unit, i think
Can you just short out all the caps now they're low so they all start at 0v?