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Old 11-12-2013, 03:40 PM   #1
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Basic Circuit Questions

I'm new to electricity, though I'm currently making a circuit in which a mini usb port is connected to and charges a supercapacitor. The supercapcitor is also connected to a buzzer, switch and LED. The supercapacitor powers those thing when it's charged. My question is, if I were to wire the mini USB port to the supercapacitor, would it be okay if I just soldered wires on to that existing circuit? I've added some a picture below. Also, when I solder things together,do I solder them positive to positive, negative to negative,in that pattern? Thanks a ton for your help!
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Old 11-12-2013, 04:05 PM   #2
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You might want to put a current limiting resistor in between
the super cap and the usb.
A fully discharged discharged super cap will put a large load
on the usb lines, possibly too much.
I am sure there is a limit as to how much current you can pull
from the usb lines.


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