Wednesday, January 27, 2010

Boggled by farads

For technical or physics-minded folks: Recall when the news of a big capacitor was that a 0.5 to 1.0 farad capacitor would fill a good-sized barn? Well, I just heard from an old friend that there is this news that this company is now selling capacitors that are up to 5,000 farads in value!

As the friend puts it: "And I don’t mean 5000 units of a one farad capacitor… That’s 5,000,000,000 microfarads/part!"

But (and here's possibly one catch for some practical uses for these parts to replace batteries for emergency operations), the parts are rated at 2.7 volts.

Comments are welcomed.


  1. The photo is of small models of the actual capacitors, right?

  2. No-o-o-o-o, here
    are values from 220 farads to 5,000 farads for

    The big one in that photo is only 15 cm tall! (80x64x150 mm)That is truly mind-boggling.