i have been confused by this for a while now hoping somone can clerify.
i have always thought of a capacitor similar to a water tower the higher the voltage the higher the tower, the larger the value of the cap the biger the pipe to the tank, and the phisical size as the caacity. but you take a 1000 uf cap and charge it to 12 V you get a good size spark but if you charge a super cap when shorted out it makes no spark. (but this could be bacause most super caps i have are aprox 5v. but still would think somthing would be seen.) so this makes it seem like the value and the size of the cap are kind of the same thing. so is my anologie wrong?
also is value and phisical size important? because i have replaced some caps i find one of the same value as the bad one but it is phisicaly slightly biger or smaller. can these be used as long as the values are the same or do they need to be the same in phisical size as well?
i have always thought of a capacitor similar to a water tower the higher the voltage the higher the tower, the larger the value of the cap the biger the pipe to the tank, and the phisical size as the caacity. but you take a 1000 uf cap and charge it to 12 V you get a good size spark but if you charge a super cap when shorted out it makes no spark. (but this could be bacause most super caps i have are aprox 5v. but still would think somthing would be seen.) so this makes it seem like the value and the size of the cap are kind of the same thing. so is my anologie wrong?
also is value and phisical size important? because i have replaced some caps i find one of the same value as the bad one but it is phisicaly slightly biger or smaller. can these be used as long as the values are the same or do they need to be the same in phisical size as well?