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Charged supercap with reverse polarity (lemmy.world)

submitted 1 month ago by TelepathicWalrus@lemmy.world to c/askelectronics@discuss.tchncs.de

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Hey!

I have made a 24v supercapacitor bank which is made of 12 2.7v 20F supercapacitors, balancing resistors, charge resistor and a diode to bypass the charge resistor when in discharge mode.

The mistake was made when it was connected to a mean well LRS-100-24 which is a 24v 100W supply. When I powered it up the other control board was starting and stopping - the power supply was current limiting. Im not sure what voltage would have been applied to the supercapacitors but I think it wasn't high as the microprocessor on the other board was constantly resetting so the supercaps were not charged.

This happened for a maximum of 60s until I realised what was wrong and disconnected the caps.

My question is - will the capacitors be damaged from this event? Any help is very much appreciated.

Thanks

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[–] hmn@lemmy.staphup.nl 1 points 1 week ago

i dont have an answer, but im interested if you found out more

Can you post a picture of the schematic?