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Author Topic: How does one calculate what type of capacitor to use?  (Read 2519 times)

xtant3150

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How does one calculate what type of capacitor to use?
« Reply #10 on: October 13, 2003, 10:45:48 AM »

I don't know of any calculator, but the size of cap that you would need would depend on the current draw from your radio and the length of time that it's needed.  I seriously doubt that a 1000uF cap would last the ammount of time you need.  You would probably need a 1/4 to 1/2 Farad cap (note - not micro Farad) for it to last a few seconds powering your radio...
Have you tried running a new 12v line from the battery to the head unit?
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viridius

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How does one calculate what type of capacitor to use?
« Reply #11 on: October 13, 2003, 06:14:24 PM »

One farad is defined as a stored charge of one coulomb at a potential of one volt.  A farad is huge, so you'll see caps rated in microfarads (uF, 0.000001 farad) or picofarads (pF, 0.000000000001 farad).  I don't assume that a 1000 uF capacitor will be able to power the entire radio for the time it cuts out, just to smooth out some dips and spikes that may be causing some circuits to shut down.  It's worth a try anyway.
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monkey_sass

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How does one calculate what type of capacitor to use?
« Reply #12 on: October 13, 2003, 08:34:02 PM »

especially since it means a difference of $50-75
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