For decades, low-voltage can-style capacitors a couple of inches long were typically around 470 uF (microfarads). Larger diameters 3 or 4 inches long would run 4700 uF. But now I'm seeing caps about the same size offered on lots of manufacturers' websites marked "3.3F" all the way to "3000F". And note that's "F" not "uF" or mFD or whatever else.
When I was in school--admittedly long years ago--we read that a "one farad" cap would be the size of a house. Now I realize technology is always improving but can anyone confirm that you can get a "3000 farad" cap just a few inches long? I'm extremely skeptical. From the pics of the cans I'm thinking they should be 3000 uF, but LOTS of manufacturer sites use just "F".
Did the industry decide to change the marking conventions so "F" is really "uF" or is there some other explanation? Thanks!
When I was in school--admittedly long years ago--we read that a "one farad" cap would be the size of a house. Now I realize technology is always improving but can anyone confirm that you can get a "3000 farad" cap just a few inches long? I'm extremely skeptical. From the pics of the cans I'm thinking they should be 3000 uF, but LOTS of manufacturer sites use just "F".
Did the industry decide to change the marking conventions so "F" is really "uF" or is there some other explanation? Thanks!